Sound Financial Bancorp (SFBC) 10-Q 13 Nov 17 2017 Q3 Quarterly report Financial data

Document and Entity Information

Document and Entity Information - shares	9 Months Ended
	Sep. 30, 2017	Nov. 08, 2017
Document and Entity Information [Abstract]
Entity Registrant Name	Sound Financial Bancorp, Inc.
Entity Central Index Key	1,541,119
Current Fiscal Year End Date	--12-31
Entity Well-known Seasoned Issuer	No
Entity Voluntary Filers	No
Entity Current Reporting Status	Yes
Entity Filer Category	Smaller Reporting Company
Entity Common Stock, Shares Outstanding		2,510,045
Document Fiscal Year Focus	2,017
Document Fiscal Period Focus	Q3
Document Type	10-Q
Amendment Flag	false
Document Period End Date	Sep. 30, 2017

Condensed Consolidated Balance

Condensed Consolidated Balance Sheets (unaudited) - USD ($) $ in Thousands	Sep. 30, 2017	Dec. 31, 2016
ASSETS
Cash and cash equivalents	$ 60,651	$ 54,582
Available-for-sale securities, at fair value	5,688	6,604
Loans held for sale	296	871
Loans	528,208	500,001
Allowance for loan losses	(4,991)	(4,822)
Total loans, net	523,217	495,179
Accrued interest receivable	1,943	1,816
Bank-owned life insurance ("BOLI"), net	12,602	12,082
Other real estate owned ("OREO") and repossessed assets, net	1,032	1,172
Mortgage servicing rights, at fair value	3,370	3,561
Federal Home Loan Bank ("FHLB") stock, at cost	1,825	2,840
Premises and equipment, net	7,338	5,549
Other assets	4,574	4,127
Total assets	622,536	588,383
Deposits
Interest-bearing	448,291	403,990
Noninterest-bearing demand	76,526	63,741
Total deposits	524,817	467,731
Borrowings	28,000	54,792
Accrued interest payable	68	73
Other liabilities	5,241	4,874
Advance payments from borrowers for taxes and insurance	1,066	638
Total liabilities	559,192	528,108
COMMITMENTS AND CONTINGENCIES (NOTE 7)
STOCKHOLDERS' EQUITY
Preferred stock, $0.01 par value, 10,000,000 shares authorized, none issued or outstanding	0	0
Common stock, $0.01 par value, 40,000,000 shares authorized, 2,510,045 and 2,498,804 shares issued and outstanding as of September 30, 2017 and December 31, 2016, respectively	25	25
Additional paid-in capital	24,297	23,979
Unearned shares - Employee Stock Ownership Plan ("ESOP")	(683)	(683)
Retained earnings	39,558	36,873
Accumulated other comprehensive income, net of tax	147	81
Total stockholders' equity	63,344	60,275
Total liabilities and stockholders' equity	$ 622,536	$ 588,383

Condensed Consolidated Balance3

Condensed Consolidated Balance Sheets (unaudited) (Parenthetical) - $ / shares	Sep. 30, 2017	Dec. 31, 2016
STOCKHOLDERS' EQUITY
Preferred stock, par value (in dollars per share)	$ 0.01	$ 0.01
Preferred stock, shares authorized (in shares)	10,000,000	10,000,000
Preferred stock, shares issued (in shares)	0	0
Preferred stock, shares outstanding (in shares)	0	0
Common stock, par value (in dollars per share)	$ 0.01	$ 0.01
Common stock, shares authorized (in shares)	40,000,000	40,000,000
Common stock, shares issued (in shares)	2,510,045	2,498,804
Common stock, shares outstanding (in shares)	2,510,045	2,498,804

Condensed Consolidated Statemen

Condensed Consolidated Statements of Income (unaudited) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
INTEREST INCOME
Loans, including fees	$ 6,832	$ 6,050	$ 19,630	$ 18,053
Interest and dividends on investments, cash and cash equivalents	234	98	544	279
Total interest income	7,066	6,148	20,174	18,332
INTEREST EXPENSE
Deposits	808	678	2,199	2,020
Borrowings	72	52	238	136
Total interest expense	880	730	2,437	2,156
Net interest income	6,186	5,418	17,737	16,176
PROVISION FOR LOAN LOSSES	250	0	250	250
Net interest income after provision for loan losses	5,936	5,418	17,487	15,926
NONINTEREST INCOME
Service charges and fee income	439	743	1,442	1,988
Earnings on cash surrender value of bank-owned life insurance	82	84	245	252
Mortgage servicing income	18	239	399	462
Net gain on sale of loans	287	477	720	1,028
Total noninterest income	826	1,543	2,806	3,730
NONINTEREST EXPENSE
Salaries and benefits	2,777	2,632	8,130	7,813
Operations	1,002	1,181	3,052	3,237
Regulatory assessments	80	124	340	404
Occupancy	520	376	1,415	1,141
Data processing	448	434	1,293	1,264
Net loss on OREO and repossessed assets	109	3	123	9
Total noninterest expense	4,936	4,750	14,353	13,868
Income before provision for income taxes	1,826	2,211	5,940	5,788
Provision for income taxes	604	757	2,001	1,974
Net income	$ 1,222	$ 1,454	$ 3,939	$ 3,814
Earnings per common share:
Basic (in dollars per share)	$ 0.49	$ 0.58	$ 1.57	$ 1.54
Diluted (in dollars per share)	$ 0.48	$ 0.57	$ 1.54	$ 1.48
Weighted-average number of common shares outstanding:
Basic (in shares)	2,506,863	2,490,089	2,502,399	2,483,004
Diluted (in shares)	2,562,373	2,568,457	2,562,606	2,556,949

Condensed Consolidated Stateme5

Condensed Consolidated Statements of Comprehensive Income (unaudited) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Condensed Consolidated Statements of Comprehensive Income (unaudited) [Abstract]
Net income	$ 1,222	$ 1,454	$ 3,939	$ 3,814
Available for sale securities:
Unrealized gains arising during the period, net of tax provision of $4, $(19), $34 and $13, respectively	8	(35)	66	23
Other comprehensive income, net of tax	8	(35)	66	23
Comprehensive income	$ 1,230	$ 1,419	$ 4,005	$ 3,837

Condensed Consolidated Stateme6

Condensed Consolidated Statements of Comprehensive Income (unaudited) (Parenthetical) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Available for sale securities:
Unrealized gains on sale of securities arising during the period, tax provision	$ 4	$ (19)	$ 34	$ 13

Condensed Consolidated Stateme7

Condensed Consolidated Statements of Stockholders' Equity (unaudited) - USD ($) $ in Thousands	Common Stock [Member]	Additional Paid-in Capital [Member]	Unearned ESOP Shares [Member]	Retained Earnings [Member]	Accumulated Other Comprehensive Income, Net of Tax [Member]	Total
Balances at Dec. 31, 2015	$ 25	$ 23,002	$ (911)	$ 32,240	$ 164	$ 54,520
Balances (in shares) at Dec. 31, 2015	2,469,206
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income				3,814		3,814
Other comprehensive income, net of tax					23	23
Share-based compensation		354				354
Cash dividends paid on common stock				(558)		(558)
Common Stock repurchase in conjunction with stock option exercise						0
Common Stock repurchase in conjunction with stock option exercise (in shares)	(2,805)
Restricted stock awards issued						0
Restricted stock awards issued (in shares)	11,606
Restricted stock forfeited and retired						0
Restricted stock forfeited and retired (in shares)	(1,059)
Exercise of options		164				164
Exercise of options (in shares)	21,656
Balances at Sep. 30, 2016	$ 25	23,520	(911)	35,496	187	58,317
Balances (in shares) at Sep. 30, 2016	2,498,604
Balances at Dec. 31, 2016	$ 25	23,979	(683)	36,873	81	$ 60,275
Balances (in shares) at Dec. 31, 2016	2,498,804					2,498,804
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income				3,939		$ 3,939
Other comprehensive income, net of tax					66	66
Share-based compensation		285				285
Cash dividends paid on common stock				(1,254)		(1,254)
Common stock surrendered						0
Common stock surrendered (in shares)	(3,353)
Restricted stock awards issued						0
Restricted stock awards issued (in shares)	576
Exercise of options		33				33
Exercise of options (in shares)	14,018
Balances at Sep. 30, 2017	$ 25	$ 24,297	$ (683)	$ 39,558	$ 147	$ 63,344
Balances (in shares) at Sep. 30, 2017	2,510,045					2,510,045

Condensed Consolidated Stateme8

Condensed Consolidated Statements of Stockholders' Equity (unaudited) (Parenthetical) - $ / shares	9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016
Condensed Consolidated Statements of Stockholders' Equity (unaudited) [Abstract]
Cash dividends paid on common stock ( in dollars per share)	$ 0.50	$ 0.23

Condensed Consolidated Stateme9

Condensed Consolidated Statements of Cash Flows (unaudited) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016
CASH FLOWS FROM OPERATING ACTIVITIES:
Net income	$ 3,939	$ 3,814
Adjustments to reconcile net income to net cash from operating activities:
Accretion of net discounts on investments	(16)	32
Provision for loan losses	250	250
Depreciation and amortization	706	593
Compensation expense related to stock options and restricted stock	285	354
Net change in mortgage servicing rights	191	210
Increase in cash surrender value of BOLI	(245)	(252)
Net gain on sale of loans	(720)	(1,028)
Proceeds from sale of loans	35,818	58,464
Originations of loans held-for-sale	(34,522)	(57,769)
Net (gain)/loss on sale and write-downs of OREO and repossessed assets	109	3
Change in operating assets and liabilities:
Accrued interest receivable	(127)	(22)
Other assets	(482)	(330)
Accrued interest payable	(5)	(10)
Other liabilities	367	719
Net cash provided by operating activities	5,548	5,028
CASH FLOWS FROM INVESTING ACTIVITIES:
Proceeds from principal payments, maturities and sales of available-for-sale securities	1,032	1,008
Purchases of available-for-sale securities	0	(1,363)
FHLB stock redeemed	1,015	66
Net decrease/(increase) in loans	(28,505)	(17,873)
Purchase of BOLI	(275)	0
Proceeds from sale of OREO and other repossessed assets	248	131
Purchases of premises and equipment, net	(2,495)	(532)
Net cash received from branch acquisition	13,671	0
Net cash provided/(used) by investing activities	(15,309)	(18,563)
CASH FLOWS FROM FINANCING ACTIVITIES:
Net increase in deposits	43,415	23,459
Proceeds from borrowings	137,000	106,000
Repayment of borrowings	(163,792)	(108,982)
Dividends paid on common stock	(1,254)	(558)
Net change in advances from borrowers for taxes and insurance	428	463
Proceeds from stock option exercises	33	164
Net cash used by financing activities	15,830	20,546
Net change in cash and cash equivalents	6,069	7,011
Cash and cash equivalents, beginning of period	54,582	48,264
Cash and cash equivalents, end of period	60,651	55,275
SUPPLEMENTAL CASH FLOW INFORMATION:
Cash paid for income taxes	1,910	2,290
Interest paid on deposits and borrowings	2,442	2,166
Noncash net transfer from loans to OREO and repossessed assets	0	249
Assets acquired in acquisition of branch	$ 14,474	$ 0

Basis of Presentation

Basis of Presentation	9 Months Ended
	Sep. 30, 2017
Basis of Presentation [Abstract]
Basis of Presentation	Note 1 – Basis of Presentation The accompanying financial information is unaudited and has been prepared from the consolidated financial statements of Sound Financial Bancorp, Inc., and its wholly owned subsidiary, Sound Community Bank. References in this document to Sound Financial Bancorp refer to Sound Financial Bancorp, Inc. and references to the "Bank" refer to Sound Community Bank. References to "we," "us," and "our" or the "Company" refers to Sound Financial Bancorp and its wholly-owned subsidiary, Sound Community Bank, unless the context otherwise requires. These unaudited condensed consolidated financial statements have been prepared in accordance with accounting principles generally accepted in the United States ("GAAP") for interim financial information and in accordance with the instructions to Form 10-Q and Article 10 of Regulation S-X as promulgated by the Securities and Exchange Commission ("SEC"). In the opinion of management, all adjustments (consisting of normal recurring accruals) considered necessary for a fair presentation of the financial position and results of operations for the periods presented have been included. Certain information and disclosures normally included in financial statements prepared in accordance with GAAP have been condensed or omitted pursuant to the rules and regulations of the SEC. These unaudited financial statements should be read in conjunction with the Company's Annual Report on Form 10-K for the year ended December 31, 2016, as filed with the SEC on March 27, 2017 ("2016 Form 10-K"). The results for the interim periods are not necessarily indicative of results for a full year. For further information, refer to the consolidated financial statements and footnotes for the year ended December 31, 2016, included in the 2016 Form 10-K. Certain amounts in the prior quarters' consolidated financial statements have been reclassified to conform to the current presentation. These classifications do not have an impact on previously reported consolidated net income, retained earnings, stockholders' equity or earnings per share.

Accounting Pronouncements Recen

Accounting Pronouncements Recently Issued or Adopted	9 Months Ended
	Sep. 30, 2017
Accounting Pronouncements Recently Issued or Adopted [Abstract]
Accounting Pronouncements Recently Issued or Adopted	Note 2 – Accounting Pronouncements Recently Issued or Adopted In May 2014, the Financial Accounting Standards Board ("FASB") issued Accounting Standards Update ("ASU") No. 2014-09, Revenue from Contracts with Customers (Topic 606), which creates Topic 606 and supersedes Topic 605, Revenue Recognition. In August 2015, FASB issued ASU No. 2015-14, Revenue from Contracts with Customers (Topic 606), which postponed the effective date of 2014-09. In March 2016, the FASB issued ASU 2016-08, Revenue from Contracts with Customers (Topic 606): Principal versus Agent Considerations (Reporting Revenue Gross versus Net, which amended the principal versus agent implementation guidance set for in ASU 2014-09. Among other things, ASU 2016-08 clarifies that an entity should evaluate whether it is the principal or the agent for each specified good or service promised in a contract with a customer. In April 2016, the FASB issued ASU No. 2016-10, Revenue from Contracts with Customers (Topic 606): Identifying Performance Obligations and Licensing. The ASU amends certain aspects of the guidance set forth in the FASB's new revenue standard related to identifying performance obligations and licensing implementation. The core principle of Topic 606 is that an entity recognizes revenue to depict the transfer of promised goods or services to customers in an amount that reflects the consideration to which the entity expects to be entitled in exchange for those goods or services. In general, the new ASU requires companies to use more judgment and make more estimates than under current guidance, including identifying performance obligations in the contract, estimating the amount of variable consideration to include in the transaction price and allocating the transaction price to each separate performance obligation. In May 2016, the FASB issued ASU No. 2016-12, Revenue from Contracts with Customers (Topic 606): Narrow-Scope Improvements and Practical Expedients, which provides clarifying guidance in certain narrow areas and adds some practical expedients, but does not change the core revenue recognition principle in Topic 606. This ASU is effective for interim and annual periods beginning after December 15, 2017; early adoption is not permitted. For financial reporting purposes, the ASU allows for either full retrospective adoption, meaning this ASU is applied to all of the periods presented, or modified retrospective adoption, meaning the ASU is applied only to the most current period presented in the financial statements with the cumulative effect of initially applying the ASU recognized at the date of initial application. As a financial institution, the Company's largest component of revenue, interest income, is excluded from the scope of this ASU. Accordingly, the adoption of ASU No. 2014-09 is not expected to have a material impact on the Company's consolidated financial statements. In January 2016, the FASB issued ASU No. 2016-01, Financial Instruments - Overall (Subtopic 825-10), Recognition and Measurement of Financial Assets and Financial Liabilities. The new guidance is intended to improve the recognition and measurement of financial instruments. This ASU requires equity investments (except those accounted for under the equity method of accounting, or those that result in consolidation of the investee) to be measured at fair value with changes in fair value recognized in net income. In addition, the ASU requires public business entities to use the exit price notion when measuring the fair value of financial instruments for disclosure purposes and requires separate presentation of financial assets and financial liabilities by measurement category and form of financial asset (i.e., securities or loans and receivables) on the balance sheet or the accompanying notes to the financial statements. This ASU also eliminates the requirement for public business entities to disclose the method(s) and significant assumptions used to estimate the fair value that is required to be disclosed for financial instruments measured at amortized cost on the balance sheet. The ASU also requires a reporting organization to present separately in other comprehensive income the portion of the total change in the fair value of a liability resulting from a change in the instrument specific credit risk (also referred to as "own credit") when the organization has elected to measure the liability at fair value in accordance with the fair value option for financial instruments. ASU No. 2016-01 is effective for financial statements issued for fiscal years beginning after December 15, 2017, and interim periods within those fiscal years. Early adoption is permitted for certain provisions. The adoption of ASU No. 2016-01is not expected to have a material impact on the Company's consolidated financial statements. Management is in the planning stages of developing processes and procedures to comply with the disclosure requirements of this ASU, which could impact the disclosures the Company makes related to the fair value of its financial instruments. In February 2016, FASB issued ASU No. 2016-02, Leases (Topic 842). ASU No. 2016-02 requires lessees to recognize, on the balance sheet, the assets and liabilities arising from operating leases. A lessee should recognize a liability to make lease payments and a right-of-use asset representing its right to use the underlying asset for the lease term. A lessee should include payments to be made in an optional period only if the lessee is reasonably certain to exercise an option to extend the lease or not to exercise an option to terminate the lease. For a finance lease, interest payments should be recognized separately from amortization of the right-of-use asset in the statement of comprehensive income. For operating leases, the lease cost should be allocated over the lease term on a generally straight-line basis. The amendments in ASU 2016-02 are effective for fiscal years beginning after December 15, 2018, including interim periods within those fiscal years. Early application of the amendments in the ASU is permitted. Although an estimate of the impact of the new leasing standard has not yet been determined, once adopted, we expect to report higher assets and liabilities as a result of including right-of-use assets and lease liabilities related to certain banking offices and certain equipment under noncancelable operating lease agreements, however, based on current leases the adoption is not expected to have a material impact on the Company's consolidated financial statements. In June 2016, the FASB issued ASU No. 2016-13, Financial Instruments- Credit Losses (Topic 326): Measurement of Credit Losses on Financial Instruments. This ASU replaces the existing incurred loss impairment methodology that recognizes credit losses when a probable loss has been incurred with new methodology where loss estimates are based upon lifetime expected credit losses. The amendments in this ASU require a financial asset that is measured at amortized cost to be presented at the net amount expected to be collected. The income statement would then reflect the measurement of credit losses for newly recognized financial assets as well as changes to the expected credit losses that have taken place during the reporting period. The measurement of expected credit losses will be based on historical information, current conditions, and reasonable and supportable forecasts that impact the collectability of the reported amount. Available-for-sale securities will bifurcate the fair value mark and establish an allowance for credit losses through the income statement for the credit portion of that mark. The interest portion will continue to be recognized through accumulated other comprehensive income or loss. The change in allowance recognized as a result of adoption will occur through a cumulative-effect adjustment to retained earnings as of the beginning of the first reporting period in which the ASU is adopted. The amendments in this ASU are effective for fiscal years beginning after December 15, 2019 with early adoption permitted after December 15, 2018. The Company has begun the process to implement this new standard by working with a vendor that specializes in this area. While the Company has not quantified the impact of this ASU, it does expect changing from the current incurred loss model to an expected loss model will result in an earlier recognition of losses. The Company also expects that once adopted the allowance for loan losses will increase, however, until its evaluation is complete the magnitude of the increase will be unknown. In August 2016, FASB issued ASU No. 2016-15, Statement of Cash Flows (Topic 230): Classification of Certain Cash Receipts and Cash Payments. This ASU addresses the appropriate classification of eight specific cash flow issues on the cash flow statement. Debt prepayment costs should be classified as an outflow for financing activities. Settlement of zero-coupon debt instruments divides the interest portion as an outflow for operating activities and the principal portion as an outflow for financing activities. Contingent consideration payments made after a business combination should be classified as outflows for financing and operating activities. Proceeds from the settlement of bank-owned life insurance policies should be classified as inflows from investing activities. Other specific areas are identified in the ASU as to the appropriate classification of the cash inflows or outflows. The amendments in this ASU are effective for fiscal years beginning after December 15, 2017, including interim periods within those fiscal years. Early adoption is permitted and must be applied using a retrospective transition method to each period presented. The Company does not expect this ASU to have a material impact on the Company's consolidated financial statements. In March 2017, the FASB issued ASU 2017-08, Receivables-Nonrefundable Fees and Other Costs (Subtopic 310-20). ASU 2017-08 is intended to amend the amortization period for certain purchased callable debt securities held at a premium. Under ASU 2017-08, the FASB is shortening the amortization period for the premium to the earliest call date. Under current GAAP, entities generally amortize the premium as an adjustment of yield over the contractual life of the instrument. ASU 2017-08 is effective for annual periods, and interim periods within those annual periods, beginning after December 15, 2018. The Company is reviewing its securities portfolio to assess the impact the adoption of this ASU will have on the Company's consolidated financial statements but does not expect this ASU to have a material impact on the Company's consolidated financial statements. In May 2017, the FASB issued ASU No. 2017-09, Compensation--Stock Compensation (Topic 718): Scope of Modification Accounting In August 2017, the FASB issued ASU No. 2017-12, Derivatives and Hedging (Topic 815): Targeted Improvements to Accounting for Hedging Activities.

Investments

Investments	9 Months Ended
	Sep. 30, 2017
Investments [Abstract]
Investments	Note 3 – Investments The amortized cost and fair value of our available-for-sale ("AFS") securities and the corresponding amounts of gross unrealized gains and losses at the dates indicated were as follows (in thousands): Amortized Cost Gross Unrealized Gains Gross Unrealized Losses Estimated Fair Value September 30, 2017 Municipal bonds $ 3,245 $ 175 $ (3 ) $ 3,417 Agency mortgage-backed securities 2,221 50 - 2,271 Total $ 5,466 $ 225 $ (3 ) $ 5,688 December 31, 2016 Municipal bonds $ 3,262 $ 127 $ (36 ) $ 3,353 Agency mortgage-backed securities 2,858 49 (3 ) 2,904 Non-agency mortgage-backed securities 362 - (15 ) 347 Total $ 6,482 $ 176 $ (54 ) $ 6,604 The amortized cost and fair value of AFS securities at September 30, 2017, by contractual maturity, are shown below (in thousands). Expected maturities of AFS securities may differ from contractual maturities because borrowers may have the right to call or prepay obligations with or without call or prepayment penalties. Investments not due at a single maturity date, primarily mortgage-backed investments, are shown separately. September 30, 2017 Amortized Cost Fair Value Due after one year through five years $ 1,333 $ 1,329 Due after five years through ten years 413 443 Due after ten years 1,499 1,645 Mortgage-backed securities 2,221 2,271 Total $ 5,466 $ 5,688 There were no pledged securities at September 30, 2017 and December 31, 2016. There were no sales of AFS securities during the three or nine months ended September 30, 2017 and 2016. The following tables summarize the aggregate fair value and gross unrealized loss by length of time of those investments that have been in a continuous unrealized loss position at the dates indicated (in thousands): September 30, 2017 Less Than 12 Months 12 Months or Longer Total Fair Value Unrealized Loss Fair Value Unrealized Loss Fair Value Unrealized Loss Municipal bonds $ 456 $ (1 ) $ 874 $ (2 ) $ 1,330 $ (3 ) Agency mortgage-backed securities - - - - - - Total $ 456 $ (1 ) $ 874 $ (2 ) $ 1,330 $ (3 ) December 31, 2016 Less Than 12 Months 12 Months or Longer Total Fair Value Unrealized Loss Fair Value Unrealized Loss Fair Value Unrealized Loss Municipal bonds $ 1,313 $ (36 ) $ - $ - $ 1,313 $ (36 ) Agency mortgage-backed securities - - 1,125 (3 ) 1,125 (3 ) Non-agency mortgage-backed securities - - 347 (15 ) 347 (15 ) Total $ 1,313 $ (36 ) $ 1,472 $ (18 ) $ 2,785 $ (54 ) There were no credit losses recognized in earnings during the three and nine months ended September 30, 2017 or 2016 relating to the Company's securities. At September 30, 2017, two municipal securities were in an unrealized loss position for less than 12 months and one municipal security was in an unrealized loss position for over 12 months. At December 31, 2016, three municipal securities were in an unrealized loss position for less than 12 months and one agency security and one non-agency mortgage-backed security were in a loss position for over 12 months. The agency mortgage-backed security in an unrealized loss position at December 31, 2016 was guaranteed by a U.S. governmental agency. The non-agency mortgage-backed security was fully redeemed during the third quarter of 2017. The unrealized losses were caused by changes in market interest rates or the widening of market spreads subsequent to the initial purchase of these securities, and not related to the underlying credit of the issuers or the underlying collateral. It is expected that these securities will not be settled at a price less than the amortized cost of each investment. Because the decline in fair value is attributable to changes in interest rates or widening market spreads and not credit quality, and because we do not intend to sell the securities in this class and it is not likely that we will be required to sell these securities before recovery of their amortized cost basis, which may include holding each security until contractual maturity. The unrealized losses on these investments are not considered an other-than-temporary impairment ("OTTI") during the three and nine months ended September 30, 2017 or the year ended December 31, 2016.

Loans

Loans	9 Months Ended
	Sep. 30, 2017
Loans [Abstract]
Loans	Note 4 – Loans The composition of the loan portfolio at the dates indicated, excluding loans held-for-sale, was as follows (in thousands): September 30, 2017 December 31, 2016 Real estate loans: One- to four- family $ 156,871 $ 152,386 Home equity 29,129 27,771 Commercial and multifamily 201,411 181,004 Construction and land 54,921 70,915 Total real estate loans $ 442,332 $ 432,076 Consumer loans: Manufactured homes 16,864 15,494 Floating homes 26,699 23,996 Other consumer 5,032 3,932 Total consumer loans 48,595 43,422 Commercial business loans 39,158 26,331 Total loans 530,085 501,829 Deferred fees (1,877 ) (1,828 ) Total loans, gross 528,208 500,001 Allowance for loan losses (4,991 ) (4,822 ) Total loans, net $ 523,217 $ 495,179 The following table presents the balance in the allowance for loan losses and the recorded investment in loans by portfolio segment and based on impairment method as of September 30, 2017 (in thousands): One- to four- family Home equity Commercial and multifamily Construction and land Manufactured homes Floating homes Other consumer Commercial business Unallocated Total Allowance for loan losses: Individually evaluated for impairment $ 377 $ 168 $ - $ 32 $ 70 $ - $ 57 $ 276 $ - $ 980 Collectively evaluated for impairment 874 183 1,185 327 110 154 41 231 906 4,011 Ending balance $ 1,251 $ 351 $ 1,185 $ 359 $ 180 $ 154 $ 98 $ 507 $ 906 $ 4,991 Loans receivable: Individually evaluated for impairment $ 6,664 $ 1,007 $ 1,717 $ 99 $ 309 $ - $ 57 $ 357 $ - $ 10,210 Collectively evaluated for impairment 150,207 28,122 199,694 54,822 16,555 26,699 4,975 38,801 - 519,875 Ending balance $ 156,871 $ 29,129 $ 201,411 $ 54,921 $ 16,864 $ 26,699 $ 5,032 $ 39,158 $ - $ 530,085 The following table presents the balance in the allowance for loan losses and the recorded investment in loans by portfolio segment and based on impairment method as of December 31, 2016 (in thousands): One- to four- family Home equity Commercial and multifamily Construction and land Manufactured homes Floating homes Other consumer Commercial business Unallocated Total Allowance for loan losses: Individually evaluated for impairment $ 536 $ 121 $ 24 $ 35 $ 59 $ - $ 65 $ 23 $ - $ 863 Collectively evaluated for impairment 1,006 257 1,120 424 109 132 47 152 712 3,959 Ending balance $ 1,542 $ 378 $ 1,144 $ 459 $ 168 $ 132 $ 112 $ 175 $ 712 $ 4,822 Loans receivable: Individually evaluated for impairment $ 4,749 $ 832 $ 1,582 $ 83 $ 312 $ - $ 62 $ 616 $ - $ 8,236 Collectively evaluated for impairment 147,637 26,939 179,422 70,832 15,182 23,996 3,870 25,715 - 493,593 Ending balance $ 152,386 $ 27,771 $ 181,004 $ 70,915 $ 15,494 $ 23,996 $ 3,932 $ 26,331 $ - $ 501,829 The following table summarizes the activity in the allowance for loan losses for the three months ended September 30, 2017 (in thousands): Beginning Allowance Charge-offs Recoveries Provision Ending Allowance One- to four- family $ 1,302 $ - $ - $ (51 ) $ 1,251 Home equity 431 (89 ) 1 8 351 Commercial and multifamily 1,153 - - 32 1,185 Construction and land 352 - - 7 359 Manufactured homes 178 (7 ) - 9 180 Floating homes 146 - - 8 154 Other consumer 98 (1 ) 2 (1 ) 98 Commercial business 364 - - 143 507 Unallocated 811 - - 95 906 Total $ 4,835 $ (97 ) $ 3 $ 250 $ 4,991 The following table summarizes the activity in the allowance for loan losses for the nine months ended September 30, 2017 (in thousands): Beginning Allowance Charge-offs Recoveries Provision Ending Allowance One- to four- family $ 1,542 $ - $ - $ (291 ) $ 1,251 Home equity 378 (89 ) 30 32 351 Commercial and multifamily 1,144 (24 ) 1 64 1,185 Construction and land 459 - - (100 ) 359 Manufactured homes 168 (13 ) 3 22 180 Floating homes 132 - - 22 154 Other consumer 112 (8 ) 19 (25 ) 98 Commercial business 175 - - 332 507 Unallocated 712 - - 194 906 Total $ 4,822 $ (134 ) $ 53 $ 250 $ 4,991 The following table summarizes the activity in the allowance for loan losses for the three months ended September 30, 2016 (in thousands): Beginning Allowance Charge-offs Recoveries Provision Ending Allowance One- to four- family $ 1,713 $ - $ - $ (55 ) $ 1,658 Home equity 501 (14 ) 10 (73 ) 424 Commercial and multifamily 1,377 - - (17 ) 1,360 Construction and land 388 - 18 (33 ) 373 Manufactured homes 189 - 2 (14 ) 177 Floating homes 132 - - - 132 Other consumer 89 (10 ) 15 (28 ) 66 Commercial business 171 - - 10 181 Unallocated 278 - - 210 488 Total $ 4,838 $ (24 ) $ 45 $ - $ 4,859 The following table summarizes the activity in the allowance for loan losses for the nine months ended September 30, 2016 (in thousands): Beginning Allowance Charge-offs Recoveries Provision Ending Allowance One- to four- family $ 1,839 $ (72 ) $ - $ (109 ) $ 1,658 Home equity 607 (14 ) - (169 ) 424 Commercial and multifamily 921 - - 439 1,360 Construction and land 382 - 18 (27 ) 373 Manufactured homes 301 - 75 (199 ) 177 Floating homes 111 - - 21 132 Other consumer 77 (31 ) 7 13 66 Commercial business 157 (29 ) 19 34 181 Unallocated 241 - - 247 488 Total $ 4,636 $ (146 ) $ 119 $ 250 $ 4,859 Credit Quality Indicators. When we classify problem loans as either substandard or doubtful, we may establish a specific allowance in an amount we deem prudent to address the risk specifically (if the loan is impaired) or we may allow the loss to be addressed in the general allowance (if the loan is not impaired). General allowances represent loss reserves which have been established to recognize the inherent risk associated with lending activities, but which, unlike specific allowances, have not been specifically allocated to particular problem loans. When the Company classifies problem loans as a loss, we charge-off such assets in the period in which they are deemed uncollectible. Assets that do not currently expose us to sufficient risk to warrant classification as substandard, doubtful or loss, but possess identified weaknesses, are classified as either watch or special mention assets. Our determination as to the classification of our assets and the amount of our valuation allowances is subject to review by the Federal Deposit Insurance Corporation ("FDIC"), the Bank's federal regulator, and the Washington Department of Financial Institutions ("WDFI"), the Bank's state banking regulator, which can order the establishment of additional loss allowances. Pass rated loans are loans that are not otherwise classified or criticized. The following table represents the internally assigned grades as of September 30, 2017, by type of loan (in thousands): One- to four- family Home equity Commercial and multifamily Construction and land Manufactured homes Floating homes Other consumer Commercial business Total Grade: Pass $ 151,786 $ 28,321 $ 192,817 $ 54,872 $ 16,711 $ 26,699 $ 4,975 $ 38,396 $ 514,577 Watch 246 - 6,876 - - - - 494 7,616 Special Mention 138 - 360 - - - - 134 632 Substandard 4,701 808 1,358 49 153 - 57 134 7,260 Doubtful - - - - - - - - - Loss - - - - - - - - - Total $ 156,871 $ 29,129 $ 201,411 $ 54,921 $ 16,864 $ 26,699 $ 5,032 $ 39,158 $ 530,085 The following table represents the internally assigned grades as of December 31, 2016, by type of loan (in thousands): One- to four- family Home equity Commercial and multifamily Construction and land Manufactured homes Floating homes Other consumer Commercial business Total Grade: Pass $ 148,617 $ 26,547 $ 171,678 $ 67,539 $ 15,288 $ 23,996 $ 3,821 $ 25,625 $ 483,111 Watch 998 536 8,105 3,376 78 - 49 326 13,468 Special Mention 139 - - - 30 - - - 169 Substandard 2,632 688 1,221 - 98 - 62 380 5,081 Doubtful - - - - - - - - - Loss - - - - - - - - - Total $ 152,386 $ 27,771 $ 181,004 $ 70,915 $ 15,494 $ 23,996 $ 3,932 $ 26,331 $ 501,829 Nonaccrual and Past Due Loans The following table presents the recorded investment in nonaccrual loans as of September 30, 2017, and December 31, 2016, by type of loan (in thousands): September 30, 2017 December 31, 2016 One- to four- family $ 878 $ 2,169 Home equity 700 536 Commercial and multifamily 206 218 Construction and land 49 - Manufactured homes 133 72 Commercial business 134 149 Total $ 2,100 $ 3,144 The following table represents the aging of the recorded investment in past due loans as of September 30, 2017, by type of loan (in thousands): 30-59 Days Past Due 60-89 Days Past Due 90 Days and Greater Past Due 90 Days and Greater Past Due and Still Accruing Total Past Due Current Total Loans One- to four- family $ 64 $ 1,723 $ 705 $ - $ 2,492 $ 154,379 $ 156,871 Home equity 346 28 607 - 981 28,148 29,129 Commercial and multifamily 206 - - - 206 201,205 201,411 Construction and land 43 49 49 - 141 54,780 54,921 Manufactured homes 23 103 107 - 233 16,631 16,864 Floating homes - - - - - 26,699 26,699 Other consumer 49 6 - - 55 4,977 5,032 Commercial business 409 47 - - 456 38,702 39,158 Total $ 1,140 $ 1,956 $ 1,468 $ - $ 4,564 $ 525,521 $ 530,085 The following table represents the aging of the recorded investment in past due loans as of December 31, 2016, by type of loan (in thousands): 30-59 Days Past Due 60-89 Days Past Due 90 Days and Greater Past Due 90 Days and Greater Past Due and Still Accruing Total Past Due Current Total Loans One- to four- family $ 2,476 $ 161 $ 1,787 $ - $ 4,424 $ 147,962 $ 152,386 Home equity 460 - 494 - 954 26,817 27,771 Commercial and multifamily - - - - - 181,004 181,004 Construction and land 440 - - - 440 70,475 70,915 Manufactured homes 321 28 62 - 411 15,083 15,494 Floating homes - - - - - 23,996 23,996 Other consumer 26 1 - - 27 3,905 3,932 Commercial business 149 - - - 149 26,182 26,331 Total $ 3,872 $ 190 $ 2,343 $ - $ 6,405 $ 495,424 $ 501,829 Nonperforming Loans. The following table represents the credit risk profile of our loan portfolio based on payment activity as of September 30, 2017, by type of loan (in thousands): One- to four- family Home equity Commercial and multifamily Construction and land Manufactured homes Floating homes Other consumer Commercial business Total Performing $ 154,679 $ 28,429 $ 201,205 $ 54,872 $ 16,731 $ 26,699 $ 5,032 $ 38,935 $ 526,582 Nonperforming 2,192 700 206 49 133 - - 223 3,503 Total $ 156,871 $ 29,129 $ 201,411 $ 54,921 $ 16,864 $ 26,699 $ 5,032 $ 39,158 $ 530,085 The following table represents the credit risk profile of our loan portfolio based on payment activity as of December 31, 2016, by type of loan (in thousands): One- to four- family Home equity Commercial and multifamily Construction and land Manufactured homes Floating homes Other consumer Commercial business Total Performing $ 150,170 $ 27,218 $ 180,786 $ 70,915 $ 15,374 $ 23,996 $ 3,932 $ 26,089 $ 498,480 Nonperforming 2,216 553 218 - 120 - - 242 3,349 Total $ 152,386 $ 27,771 $ 181,004 $ 70,915 $ 15,494 $ 23,996 $ 3,932 $ 26,331 $ 501,829 Impaired Loans. Impaired loans at September 30, 2017 and December 31, 2016, by type of loan were as follows (in thousands): September 30, 2017 Recorded Investment Unpaid Principal Balance Without Allowance With Allowance Total Recorded Investment Related Allowance One- to four- family $ 6,971 $ 3,403 $ 3,261 $ 6,664 $ 377 Home equity 1,125 487 520 1,007 168 Commercial and multifamily 1,737 1,717 - 1,717 - Construction and land 99 58 41 99 32 Manufactured homes 331 133 176 309 70 Other consumer 57 - 57 57 57 Commercial business 371 - 357 357 276 Total $ 10,691 $ 5,798 $ 4,412 $ 10,210 $ 980 December 31, 2016 Recorded Investment Unpaid Principal Balance Without Allowance With Allowance Total Recorded Investment Related Allowance One- to four- family $ 5,010 $ 2,454 $ 2,295 $ 4,749 $ 536 Home equity 913 446 386 832 121 Commercial and multifamily 1,582 1,221 361 1,582 24 Construction and land 83 - 83 83 35 Manufactured homes 326 91 221 312 59 Other consumer 62 - 62 62 65 Commercial business 616 143 473 616 23 Total $ 8,592 $ 4,355 $ 3,881 $ 8,236 $ 863 Income on impaired loans for the three and nine months ended September 30, 2017 and December 31, 2016, by type of loan were as follows (in thousands): Three Months Ended September 30, 2017 Three Months Ended September 30, 2016 Average Recorded Investment Interest Income Recognized Average Recorded Investment Interest Income Recognized One- to four- family $ 6,603 $ 117 $ 5,445 $ 58 Home equity 1,008 10 968 4 Commercial and multifamily 1,732 24 4,365 19 Construction and land 114 (1 ) 86 1 Manufactured homes 306 9 383 6 Other consumer 58 1 24 - Commercial business 348 5 640 9 Total $ 10,169 $ 165 $ 11,911 $ 97 Nine Months Ended September 30, 2017 Nine Months Ended September 30, 2016 Average Recorded Investment Interest Income Recognized Average Recorded Investment Interest Income Recognized One- to four- family $ 5,718 $ 269 $ 5,533 $ 197 Home equity 921 30 944 31 Commercial and multifamily 1,652 72 3,902 152 Construction and land 91 2 88 3 Manufactured homes 311 19 377 23 Other consumer 60 3 20 2 Commercial business 487 16 474 27 Total $ 9,240 $ 411 $ 11,338 $ 435 Forgone interest on nonaccrual loans was $12,000 and $95,000 for the nine months ended September 30, 2017 and 2016, respectively. There were no commitments to lend additional funds to borrowers whose loans were classified as nonaccrual or impaired at September 30, 2017 or December 31, 2016. Troubled debt restructurings. Rate Modification Term Modification Payment Modification Combination Modification There was one $1.3 million one- to four- family residential combination loan modified as a TDR during the nine months ended September 30, 2017. The following TDR loans paid off during the first nine months of 2017: a $125,000 one- to four- family residential loan, a $14,000 manufactured home loan, one $86,000 home equity loan, a $27,000 land loan, and a $359,000 commercial/multifamily loan. There were no new TDRs during the nine months ended September 30, 2016. There were no post-modification changes for the unpaid principal balance in loans, net of partial charge-offs, that were recorded as a result of the TDRs for the nine months ended September 30, 2017 and 2016. There were no TDRs for which there was a payment default within the first 12 months of modification during the nine months ended September 30, 2017 or 2016. The Company had no commitments to extend additional credit to borrowers owing receivables whose terms have been modified in TDRs. All TDRs are also classified as impaired loans and are included in the loans individually evaluated for impairment in the calculation of the allowance for loan losses.

Fair Value Measurements

Fair Value Measurements	9 Months Ended
	Sep. 30, 2017
Fair Value Measurements [Abstract]
Fair Value Measurements	Note 5 – Fair Value Measurements The following tables present information about the level in the fair value hierarchy for the Company's financial assets and liabilities, whether or not recognized or recorded at fair value as of September 30, 2017 and December 31, 2016 (in thousands): September 30, 2017 Fair Value Measurements Using: Carrying Value Estimated Fair Value Level 1 Level 2 Level 3 FINANCIAL ASSETS: Cash and cash equivalents $ 60,651 $ 60,651 $ 60,651 $ - $ - Available-for-sale securities 5,688 5,688 - 5,688 - Loans held-for-sale 296 296 - 296 - Loans receivable, net 523,217 522,167 - - 522,167 Accrued interest receivable 1,943 1,943 1,943 - - Mortgage servicing rights 3,370 3,370 - - 3,370 FHLB stock 1,825 1,825 - - 1,825 FINANCIAL LIABILITIES: Non-maturity deposits 361,201 361,201 - 361,201 - Time deposits 163,616 161,434 - 161,434 - Borrowings 28,000 28,000 - 28,000 - Accrued interest payable 68 68 - 68 - December 31, 2016 Fair Value Measurements Using: Carrying Value Estimated Fair Value Level 1 Level 2 Level 3 FINANCIAL ASSETS: Cash and cash equivalents $ 54,582 $ 54,582 $ 54,582 $ - $ - Available-for-sale securities 6,604 6,604 - 6,257 347 Loans held for sale 871 871 - 871 - Loans receivable, net 495,179 494,289 - - 494,289 Accrued interest receivable 1,816 1,816 1,816 - - Mortgage servicing rights 3,561 3,561 - - 3,561 FHLB Stock 2,840 2,840 - - 2,840 FINANCIAL LIABILITIES: Non-maturity deposits 307,989 307,989 - 307,989 - Time deposits 159,742 159,333 - 159,333 - Borrowings 54,792 54,805 - 54,805 - Accrued interest payable 73 73 - 73 - The following tables present the balance of assets measured at fair value on a recurring basis as of September 30, 2017 and December 31, 2016 (in thousands): Fair Value at September 30, 2017 Description Total Level 1 Level 2 Level 3 Municipal bonds $ 3,417 $ - $ 3,417 $ - Agency mortgage-backed securities 2,271 - 2,271 - Mortgage servicing rights 3,370 - - 3,370 Fair Value at December 31, 2016 Description Total Level 1 Level 2 Level 3 Municipal bonds $ 3,353 $ - $ 3,353 $ - Agency mortgage-backed securities 2,904 - 2,904 - Non-agency mortgage-backed securities 347 - - 347 Mortgage servicing rights 3,561 - - 3,561 For the three and nine months ended September 30, 2017 and 2016 there were no transfers between Level 1 and Level 2 nor between Level 2 and Level 3. The following tables provide a description of the valuation technique, unobservable input, and qualitative information about the unobservable inputs for the Company's assets and liabilities classified as Level 3 and measured at fair value on a recurring basis at September 30, 2017 and December 31, 2016: September 30, 2017 Financial Instrument Valuation Technique Unobservable Input(s) Range (Weighted-Average) Mortgage Servicing Rights Discounted cash flow Prepayment speed assumption 109-412% (164%) Discount rate 13-15% (13%) December 31, 2016 Financial Instrument Valuation Technique Unobservable Input(s) Range (Weighted-Average) Mortgage Servicing Rights Discounted cash flow Prepayment speed assumption 104-396% (152%) Discount rate 13%-15% (13%) Non-agency mortgage-backed securities Discounted cash flow Discount rate 7%-9% (8%) Generally, any significant increases in the constant prepayment rate and discount rate utilized in the fair value measurement of the mortgage servicing rights will result in a negative fair value adjustment (and decrease in the fair value measurement). Conversely, a decrease in the constant prepayment rate and discount rate will result in a positive fair value adjustment (and increase in the fair value measurement). An increase in the weighted average life assumptions will result in a decrease in the constant prepayment rate and conversely, a decrease in the weighted-average life will result in an increase of the constant prepayment rate. The following table provides a reconciliation of assets and liabilities (excluding mortgage servicing rights) measured at fair value using significant unobservable inputs (Level 3) on a recurring basis during the three and nine months ended September 30, 2017 and 2016 (in thousands): Three Months Ended September 30, Nine Months Ended September 30, 2017 2016 2017 2016 Beginning balance, at fair value $ 318 $ 379 $ 347 $ 428 OTTI impairment losses - - - - Sales, redemptions and principal payments (318 ) (29 ) (347 ) (90 ) Change in unrealized loss - 5 - 17 Ending balance, at fair value $ - $ 355 $ - $ 355 Mortgage servicing rights are measured at fair value using a significant unobservable input (Level 3) on a recurring basis - additional information is included in Note 6 – Mortgage Servicing Rights. The following tables present the balance of assets measured at fair value on a nonrecurring basis at the dates indicated (in thousands): Fair Value at September 30, 2017 Total Level 1 Level 2 Level 3 OREO and repossessed assets $ 1,032 $ - $ - $ 1,032 Impaired loans 10,210 - - 10,210 Fair Value at December 31, 2016 Total Level 1 Level 2 Level 3 OREO and repossessed assets $ 1,172 $ - $ - $ 1,172 Impaired loans 8,236 - - 8,236 There were no liabilities carried at fair value, measured on a recurring or nonrecurring basis, at September 30, 2017 or December 31, 2016. The following tables provide a description of the valuation technique, observable input, and qualitative information about the unobservable inputs for the Company's assets and liabilities classified as Level 3 and measured at fair value on a nonrecurring basis at September 30, 2017 and December 31, 2016: September 30, 2017 Financial Instrument Valuation Technique(s) Unobservable Input(s) Range (Weighted Average) OREO Market approach Adjustment for differences between comparable sales 0-0% (0%) Impaired loans Market approach Adjustment for differences between comparable sales 0-100% (10%) December 31, 2016 Financial Instrument Valuation Technique(s) Unobservable Input(s) Range (Weighted Average) OREO Market approach Adjusted for difference between comparable sales 0-0% (0%) Impaired loans Market approach Adjusted for difference between comparable sales 0-100% (11%) A description of the valuation methodologies used for impaired loans and OREO is as follows: Impaired Loans OREO and Repossessed Assets The following methods and assumptions were used to estimate the fair value of other financial instruments: Cash and cash equivalents, and accrued interest receivable and payable AFS Securities Loans Held-for-Sale Loans Mortgage Servicing Rights FHLB stock Deposits Borrowings Off-balance sheet financial instruments We assume interest rate risk (the risk that general interest rate levels will change) as a result of our normal operations. As a result, the fair values of our financial instruments will change when interest rate levels change, which may be favorable or unfavorable to us. Management attempts to match maturities of assets and liabilities to the extent necessary or possible to minimize interest rate risk. However, borrowers with fixed-rate obligations are less likely to prepay in a rising rate environment and more likely to prepay in a falling rate environment. Conversely, depositors who are receiving fixed-rates are more likely to withdraw funds before maturity in a rising rate environment and less likely to do so in a falling rate environment. Management monitors rates and maturities of assets and liabilities and attempts to minimize interest rate risk by establishing early withdrawal penalties for time deposits, creating interest rate floors for certain variable rate loans, adjusting terms of new loans and deposits, by borrowing at fixed-rates for fixed-terms and investing in securities with terms that mitigate our overall interest rate risk.

Mortgage Servicing Rights

Mortgage Servicing Rights	9 Months Ended
	Sep. 30, 2017
Mortgage Servicing Rights [Abstract]
Mortgage Servicing Rights	Note 6 – Mortgage Servicing Rights The unpaid principal balances of loans serviced for Federal National Mortgage Association ("Fannie Mae") at September 30, 2017 and December 31, 2016, totaled $391.5 million and $410.1 million, respectively, and are not included in the Company's financial statements. We also service loans for other financial institutions for which a servicing fee is received. The unpaid principal balances of loans serviced for other financial institutions at September 30, 2017 and December 31, 2016, totaled $19.4 million and $13.8 million, respectively, and are not included in the Company's financial statements. The key economic assumptions used in determining the fair value of mortgage servicing rights at the dates indicated are as follows: September 30, 2017 December 31, 2016 Prepayment speed (Public Securities Association "PSA" model) 164 % 152 % Weighted-average life 7.0 years 7.2 years Yield to maturity discount rate 13 % 13 % The amounts of contractually specified servicing, late and ancillary fees earned and recorded, net of fair value market adjustments to the mortgage servicing rights, are included in mortgage servicing income on the Condensed Consolidated Statements of Income which were $18,000 and $399,000 for the three and nine months ended September 30, 2017, respectively, and $239,000 and $462,000 for the three and nine months ended September 30, 2016, respectively. The gross amount of contractually specified servicing, late and ancillary fees earned and recorded in mortgage servicing income were $230,000 and $868,000 for the three and nine months ended September 30, 2017, respectively, and $223,000 and $636,000 for the three and nine months ended September 30, 2016, respectively.

Commitments and Contingencies

Commitments and Contingencies	9 Months Ended
	Sep. 30, 2017
Commitments and Contingencies [Abstract]
Commitments and Contingencies	Note 7 – Commitments and Contingencies In the normal course of operations, the Company engages in a variety of financial transactions that are not recorded in our financial statements. These transactions involve varying degrees of off-balance sheet credit, interest rate and liquidity risks. These transactions are used primarily to manage customers' requests for funding and take the form of loan commitments and lines of credit.

Borrowings and FHLB Stock

Borrowings and FHLB Stock	9 Months Ended
	Sep. 30, 2017
Borrowings and FHLB Stock [Abstract]
Borrowings and FHLB Stock	Note 8 – Borrowings and FHLB Stock The Company utilizes a loan agreement with the FHLB of Des Moines. The terms of the agreement call for a blanket pledge of a portion of the Company's mortgage and commercial and multifamily loan portfolio based on the outstanding balance. At September 30, 2017 and December 31, 2016, the amount available to borrow under this credit facility was $205.6 million and $197.9 million, respectively. At September 30, 2017, the credit facility was collateralized as follows: one- to four- family mortgage loans with an advance equivalent of $104.3 million, commercial and multifamily mortgage loans with an advance equivalent of $108.8 million and home equity loans with an advance equivalent of $15.7 million. At December 31, 2016, the credit facility was collateralized as follows: one- to four- family mortgage loans with an advance equivalent of $107.2 million, commercial and multifamily mortgage loans with an advance equivalent of $94.4 million and home equity loans with an advance equivalent of $15.9 million. The Company had outstanding borrowings under this arrangement of $28.0 million and $54.8 million at September 30, 2017 and December 31, 2016, respectively. Additionally, the Company had outstanding letters of credit from the FHLB of Des Moines with a notional amount of $16.0 million and $21.0 million at September 30, 2017 and December 31, 2016, respectively, to secure public deposits. The remaining amount available to borrow as of September 30, 2017 and December 31, 2016, was $161.6 million and $122.2 million, respectively. As a member of the FHLB system, the Bank is required to maintain a minimum level of investment in FHLB of Des Moines stock based on specific percentages of its outstanding FHLB advances. At September 30, 2017 and December 31, 2016, the Company had an investment of $1.8 million and $2.8 million, respectively, in FHLB of Des Moines stock. The Company participates in the Federal Reserve Bank Borrower-in-Custody program, which gives the Company access to the discount window. The terms of the program call for a pledge of specific assets. The Company pledges commercial and consumer loans as collateral for this line of credit. The Company had unused borrowing capacity of $34.8 million and $42.0 million and no outstanding borrowings under this program at September 30, 2017 and December 31, 2016, respectively. The Company has access to an unsecured Fed Funds line of credit from Pacific Coast Banker's Bank. The line has a one-year term maturing on The Company has access to a Fed Funds line of credit from Zions Bank under a Fed Funds Sweep and Line Agreement. The agreement allows access to a Fed Funds line of up to $9.0 million and requires the Company to maintain cash balances with Zions Bank of $250,000. The agreement may be terminated by either party. There was no balance on this line of credit as of September 30, 2017 and December 31, 2016, respectively. The Company has access to an unsecured Fed Funds line of credit from The Independent Bank. As of September 30, 2017, the amount available under this line of credit was $10.0 million. The agreement may be terminated by either party. There was no balance on this line of credit as of September 30, 2017 and December 31, 2016, respectively.

Earnings Per Common Share

Earnings Per Common Share	9 Months Ended
	Sep. 30, 2017
Earnings Per Common Share [Abstract]
Earnings Per Common Share	Note 9 – Earnings Per Common Share Basic earnings per common share is computed by dividing net income by the weighted-average number of common shares outstanding for the period, reduced for average unallocated ESOP shares and average unvested restricted stock awards. Unvested share-based awards contain non-forfeitable rights to dividends or dividend equivalents (whether paid or unpaid) are participating securities and shall be included in the computation of earnings per share pursuant to the two-class method described in ASC 260-10-45-60B. Diluted earnings per common share reflects the potential dilution that could occur if securities or other contracts to issue common stock (such as stock awards and options) were exercised or converted to common stock, or resulted in the issuance of common stock that then shared in the Company's earnings. Diluted earnings per common share is computed by dividing net income by the weighted-average number of common shares outstanding for the period increased for the dilutive effect of unexercised stock options and unvested restricted stock awards. The dilutive effect of the unexercised stock options and unvested restricted stock awards is calculated under the treasury stock method utilizing the average market value of the Company's stock for the period. Earnings per share are summarized for the periods presented in the following table (in thousands, except per share data): Three Months Ended September 30, Nine Months Ended September 30, 2017 2016 2017 2016 Net income $ 1,222 $ 1,454 $ 3,939 $ 3,814 Weighted-average number of shares outstanding, basic 2,507 2,490 2,502 2,483 Effect of potentially dilutive common shares (1) 55 78 61 74 Weighted-average number of shares outstanding, diluted 2,562 2,568 2,563 2,557 Earnings per share, basic $ 0.49 $ 0.58 $ 1.57 $ 1.54 Earnings per share, diluted $ 0.48 $ 0.57 $ 1.54 $ 1.48 (1) There were no anti-dilutive securities at either September 30, 2017 or September 30, 2016.

Stock-based Compensation

Stock-based Compensation	9 Months Ended
	Sep. 30, 2017
Stock-based Compensation [Abstract]
Stock-based Compensation	Note 10 – Stock-based Compensation Stock Options and Restricted Stock The Company currently has two existing Equity Incentive Plans, a 2008 Equity Inventive Plan (the "2008 Plan") and a 2013 Equity Incentive Plan (the "2013 Plan", and together with the 2008 Plan (the "Plans")), both of which were approved by shareholders. The Plans permit the grant of restricted stock, restricted stock units, stock options, and stock appreciation rights. Under the 2008 Plan, 126,287 shares of common stock were approved for awards for stock options and stock appreciation rights and 50,514 shares of common stock were approved for awards for restricted stock and restricted stock units. Under the 2013 Plan, 141,750 shares of common stock were approved for awards for stock options and stock appreciation rights and 56,700 shares of common stock were approved for awards for restricted stock and restricted stock units. As of September 30, 2017, on an adjusted basis, awards for stock options totaling 265,801 shares and awards for restricted stock totaling 107,214 shares of Company common stock have been granted, net of any forfeitures, to participants in the Plans. During the three months ended September 30, 2017 and 2016, share-based compensation expense totaled $144,000 and $126,000, respectively. During the nine months ended September 30, 2017 and 2016, share-based compensation expense totaled $432,000 and $354,000, respectively. Stock Option Awards The stock option awards granted to date under the 2008 Plan vest in 20 percent annual increments commencing one year from the grant date in accordance with the requirements of the 2008 Plan. The stock option awards granted to date under the 2013 Plan vest in equal annual installments of either two or four years. All of the options granted under the Plans are exercisable for a period of 10 years from the date of grant, subject to vesting. The following is a summary of the Company's stock option award activity during the nine months ended September 30, 2017: Shares Weighted- Average Exercise Price Weighted-Average Remaining Contractual Term In Years Aggregate Intrinsic Value Outstanding at January 1, 2017 170,057 $ 15.41 6.44 $ 2,141,018 Granted 32,010 28.34 Exercised (14,018 ) 9.88 Forfeited (604 ) 28.21 Expired - - Outstanding at September 30, 2017 187,445 17.99 6.48 3,000,547 Exercisable 119,885 16.27 5.87 $ 2,125,564 Expected to vest, assuming a 0% forfeiture rate over the vesting term 67,560 $ 21.05 7.56 $ 874,983 As of September 30, 2017, there was $331,000 of total unrecognized compensation cost related to non-vested stock options granted under the Plans. The cost is expected to be recognized over the remaining weighted-average vesting period of 1.6 years. The fair value of each option grant is estimated as of the grant date using the Black-Scholes option-pricing model. The fair value of options granted for the nine months ended September 30, 2017 was determined using the following weighted-average assumptions as of the grant date. Annual dividend yield 1.28 % Expected volatility 22.99 % Risk-free interest rate 2.20 % Expected term 6.50 years Weighted-average grant date fair value per option granted $ 6.62 The fair value of options granted for the nine months ended September 30, 2016 was determined using the following weighted-average assumptions as of the grant date. Annual dividend yield 1.03 % Expected volatility 25.48 % Risk-free interest rate 1.64 % Expected term 6.92 years Weighted-average grant date fair value per option granted $ 5.78 Restricted Stock Awards The fair value of the restricted stock awards is equal to the fair value of the Company's stock at the date of grant. Compensation expense is recognized over the vesting period that the awards are based. The restricted stock awards granted to date under the 2008 Plan provide for vesting in 20% annual increments commencing one year from the grant date. The restricted stock awards granted to date under the 2013 Plan provide for immediate vesting of 33.33% of a recipient's award with the balance of an individual's award under the 2013 Plan vesting in two equal annual installments commencing one year from the grant date. The following is a summary of the Company's restricted stock award activity during the nine months ended September 30, 2017: Shares Weighted-Average Grant-Date Fair Value Per Share Non-vested at January 1, 2017 26,138 $ 18.08 Granted 576 28.34 Vested (14,929 ) 17.61 Forfeited - - Expired - - Non-vested at September 30, 2017 11,785 19.05 Expected to vest assuming a 0% forfeiture rate over the vesting term 11,785 $ 19.05 As of September 30, 2017, there was $107,000 of unrecognized compensation cost related to non-vested restricted stock granted under the Plans. The cost is expected to be recognized over the weighted-average vesting period of 0.53 years. The total fair value of shares vested for the nine months ended September 30, 2017 and 2016 was $430,000 and $272,000, respectively. Employee Stock Ownership Plan In January 2008, the ESOP borrowed $1.2 million from the Company to purchase common stock of the Company. In August 2012, in conjunction with the Company's conversion to a full stock company from the mutual holding company structure, the ESOP borrowed an additional $1.1 million from the Company to purchase common stock of the Company. Both loans are being repaid by the Bank through contributions to the ESOP over a period of ten years. The interest rate on the loans is fixed at 4.00% and 2.25%, per annum, respectively. As of September 30, 2017, the remaining balances of the ESOP loans were $136,000 and $590,000, respectively. Neither the loan balances nor the related interest expense are reflected on the condensed consolidated financial statements. At September 30, 2017, the ESOP was committed to release 21,443 shares of the Company's common stock to participants and held 66,800 unallocated shares remaining to be released in future years. The fair value of the 178,124 restricted shares held by the ESOP trust was $6.1 million at September 30, 2017. ESOP compensation expense included in salaries and benefits was $172,000 and $510,000 for the three and nine months ended September 30, 2017 and $155,000 and $426,000 for the three and nine months ended September 30, 2016, respectively.

Subsequent Event

Subsequent Event	9 Months Ended
	Sep. 30, 2017
Subsequent Event [Abstract]
Subsequent Event	Note 12 – Subsequent Event On October 26, 2017, the Company declared a quarterly cash dividend of $0.10 per common share, payable November 24, 2017 to shareholders of record at the close of business November 10, 2017.

Basis of Presentation (Policies

Basis of Presentation (Policies)	9 Months Ended
	Sep. 30, 2017
Basis of Presentation [Abstract]
Basis of Presentation	The accompanying financial information is unaudited and has been prepared from the consolidated financial statements of Sound Financial Bancorp, Inc., and its wholly owned subsidiary, Sound Community Bank. References in this document to Sound Financial Bancorp refer to Sound Financial Bancorp, Inc. and references to the "Bank" refer to Sound Community Bank. References to "we," "us," and "our" or the "Company" refers to Sound Financial Bancorp and its wholly-owned subsidiary, Sound Community Bank, unless the context otherwise requires. These unaudited condensed consolidated financial statements have been prepared in accordance with accounting principles generally accepted in the United States ("GAAP") for interim financial information and in accordance with the instructions to Form 10-Q and Article 10 of Regulation S-X as promulgated by the Securities and Exchange Commission ("SEC"). In the opinion of management, all adjustments (consisting of normal recurring accruals) considered necessary for a fair presentation of the financial position and results of operations for the periods presented have been included. Certain information and disclosures normally included in financial statements prepared in accordance with GAAP have been condensed or omitted pursuant to the rules and regulations of the SEC. These unaudited financial statements should be read in conjunction with the Company's Annual Report on Form 10-K for the year ended December 31, 2016, as filed with the SEC on March 27, 2017 ("2016 Form 10-K"). The results for the interim periods are not necessarily indicative of results for a full year. For further information, refer to the consolidated financial statements and footnotes for the year ended December 31, 2016, included in the 2016 Form 10-K. Certain amounts in the prior quarters' consolidated financial statements have been reclassified to conform to the current presentation. These classifications do not have an impact on previously reported consolidated net income, retained earnings, stockholders' equity or earnings per share.

Accounting Pronouncements Rec22

Accounting Pronouncements Recently Issued or Adopted (Policies)	9 Months Ended
	Sep. 30, 2017
Accounting Pronouncements Recently Issued or Adopted [Abstract]
New Accounting Pronouncements	In May 2014, the Financial Accounting Standards Board ("FASB") issued Accounting Standards Update ("ASU") No. 2014-09, Revenue from Contracts with Customers (Topic 606), which creates Topic 606 and supersedes Topic 605, Revenue Recognition. In August 2015, FASB issued ASU No. 2015-14, Revenue from Contracts with Customers (Topic 606), which postponed the effective date of 2014-09. In March 2016, the FASB issued ASU 2016-08, Revenue from Contracts with Customers (Topic 606): Principal versus Agent Considerations (Reporting Revenue Gross versus Net, which amended the principal versus agent implementation guidance set for in ASU 2014-09. Among other things, ASU 2016-08 clarifies that an entity should evaluate whether it is the principal or the agent for each specified good or service promised in a contract with a customer. In April 2016, the FASB issued ASU No. 2016-10, Revenue from Contracts with Customers (Topic 606): Identifying Performance Obligations and Licensing. The ASU amends certain aspects of the guidance set forth in the FASB's new revenue standard related to identifying performance obligations and licensing implementation. The core principle of Topic 606 is that an entity recognizes revenue to depict the transfer of promised goods or services to customers in an amount that reflects the consideration to which the entity expects to be entitled in exchange for those goods or services. In general, the new ASU requires companies to use more judgment and make more estimates than under current guidance, including identifying performance obligations in the contract, estimating the amount of variable consideration to include in the transaction price and allocating the transaction price to each separate performance obligation. In May 2016, the FASB issued ASU No. 2016-12, Revenue from Contracts with Customers (Topic 606): Narrow-Scope Improvements and Practical Expedients, which provides clarifying guidance in certain narrow areas and adds some practical expedients, but does not change the core revenue recognition principle in Topic 606. This ASU is effective for interim and annual periods beginning after December 15, 2017; early adoption is not permitted. For financial reporting purposes, the ASU allows for either full retrospective adoption, meaning this ASU is applied to all of the periods presented, or modified retrospective adoption, meaning the ASU is applied only to the most current period presented in the financial statements with the cumulative effect of initially applying the ASU recognized at the date of initial application. As a financial institution, the Company's largest component of revenue, interest income, is excluded from the scope of this ASU. Accordingly, the adoption of ASU No. 2014-09 is not expected to have a material impact on the Company's consolidated financial statements. In January 2016, the FASB issued ASU No. 2016-01, Financial Instruments - Overall (Subtopic 825-10), Recognition and Measurement of Financial Assets and Financial Liabilities. The new guidance is intended to improve the recognition and measurement of financial instruments. This ASU requires equity investments (except those accounted for under the equity method of accounting, or those that result in consolidation of the investee) to be measured at fair value with changes in fair value recognized in net income. In addition, the ASU requires public business entities to use the exit price notion when measuring the fair value of financial instruments for disclosure purposes and requires separate presentation of financial assets and financial liabilities by measurement category and form of financial asset (i.e., securities or loans and receivables) on the balance sheet or the accompanying notes to the financial statements. This ASU also eliminates the requirement for public business entities to disclose the method(s) and significant assumptions used to estimate the fair value that is required to be disclosed for financial instruments measured at amortized cost on the balance sheet. The ASU also requires a reporting organization to present separately in other comprehensive income the portion of the total change in the fair value of a liability resulting from a change in the instrument specific credit risk (also referred to as "own credit") when the organization has elected to measure the liability at fair value in accordance with the fair value option for financial instruments. ASU No. 2016-01 is effective for financial statements issued for fiscal years beginning after December 15, 2017, and interim periods within those fiscal years. Early adoption is permitted for certain provisions. The adoption of ASU No. 2016-01is not expected to have a material impact on the Company's consolidated financial statements. Management is in the planning stages of developing processes and procedures to comply with the disclosure requirements of this ASU, which could impact the disclosures the Company makes related to the fair value of its financial instruments. In February 2016, FASB issued ASU No. 2016-02, Leases (Topic 842). ASU No. 2016-02 requires lessees to recognize, on the balance sheet, the assets and liabilities arising from operating leases. A lessee should recognize a liability to make lease payments and a right-of-use asset representing its right to use the underlying asset for the lease term. A lessee should include payments to be made in an optional period only if the lessee is reasonably certain to exercise an option to extend the lease or not to exercise an option to terminate the lease. For a finance lease, interest payments should be recognized separately from amortization of the right-of-use asset in the statement of comprehensive income. For operating leases, the lease cost should be allocated over the lease term on a generally straight-line basis. The amendments in ASU 2016-02 are effective for fiscal years beginning after December 15, 2018, including interim periods within those fiscal years. Early application of the amendments in the ASU is permitted. Although an estimate of the impact of the new leasing standard has not yet been determined, once adopted, we expect to report higher assets and liabilities as a result of including right-of-use assets and lease liabilities related to certain banking offices and certain equipment under noncancelable operating lease agreements, however, based on current leases the adoption is not expected to have a material impact on the Company's consolidated financial statements. In June 2016, the FASB issued ASU No. 2016-13, Financial Instruments- Credit Losses (Topic 326): Measurement of Credit Losses on Financial Instruments. This ASU replaces the existing incurred loss impairment methodology that recognizes credit losses when a probable loss has been incurred with new methodology where loss estimates are based upon lifetime expected credit losses. The amendments in this ASU require a financial asset that is measured at amortized cost to be presented at the net amount expected to be collected. The income statement would then reflect the measurement of credit losses for newly recognized financial assets as well as changes to the expected credit losses that have taken place during the reporting period. The measurement of expected credit losses will be based on historical information, current conditions, and reasonable and supportable forecasts that impact the collectability of the reported amount. Available-for-sale securities will bifurcate the fair value mark and establish an allowance for credit losses through the income statement for the credit portion of that mark. The interest portion will continue to be recognized through accumulated other comprehensive income or loss. The change in allowance recognized as a result of adoption will occur through a cumulative-effect adjustment to retained earnings as of the beginning of the first reporting period in which the ASU is adopted. The amendments in this ASU are effective for fiscal years beginning after December 15, 2019 with early adoption permitted after December 15, 2018. The Company has begun the process to implement this new standard by working with a vendor that specializes in this area. While the Company has not quantified the impact of this ASU, it does expect changing from the current incurred loss model to an expected loss model will result in an earlier recognition of losses. The Company also expects that once adopted the allowance for loan losses will increase, however, until its evaluation is complete the magnitude of the increase will be unknown. In August 2016, FASB issued ASU No. 2016-15, Statement of Cash Flows (Topic 230): Classification of Certain Cash Receipts and Cash Payments. This ASU addresses the appropriate classification of eight specific cash flow issues on the cash flow statement. Debt prepayment costs should be classified as an outflow for financing activities. Settlement of zero-coupon debt instruments divides the interest portion as an outflow for operating activities and the principal portion as an outflow for financing activities. Contingent consideration payments made after a business combination should be classified as outflows for financing and operating activities. Proceeds from the settlement of bank-owned life insurance policies should be classified as inflows from investing activities. Other specific areas are identified in the ASU as to the appropriate classification of the cash inflows or outflows. The amendments in this ASU are effective for fiscal years beginning after December 15, 2017, including interim periods within those fiscal years. Early adoption is permitted and must be applied using a retrospective transition method to each period presented. The Company does not expect this ASU to have a material impact on the Company's consolidated financial statements. In March 2017, the FASB issued ASU 2017-08, Receivables-Nonrefundable Fees and Other Costs (Subtopic 310-20). ASU 2017-08 is intended to amend the amortization period for certain purchased callable debt securities held at a premium. Under ASU 2017-08, the FASB is shortening the amortization period for the premium to the earliest call date. Under current GAAP, entities generally amortize the premium as an adjustment of yield over the contractual life of the instrument. ASU 2017-08 is effective for annual periods, and interim periods within those annual periods, beginning after December 15, 2018. The Company is reviewing its securities portfolio to assess the impact the adoption of this ASU will have on the Company's consolidated financial statements but does not expect this ASU to have a material impact on the Company's consolidated financial statements. In May 2017, the FASB issued ASU No. 2017-09, Compensation--Stock Compensation (Topic 718): Scope of Modification Accounting In August 2017, the FASB issued ASU No. 2017-12, Derivatives and Hedging (Topic 815): Targeted Improvements to Accounting for Hedging Activities.

Investments (Tables)

Investments (Tables)	9 Months Ended
	Sep. 30, 2017
Investments [Abstract]
Amortized Cost and Fair Value of AFS Securities and Corresponding Amounts of Gross Unrealized Gains And Losses	The amortized cost and fair value of our available-for-sale ("AFS") securities and the corresponding amounts of gross unrealized gains and losses at the dates indicated were as follows (in thousands): Amortized Cost Gross Unrealized Gains Gross Unrealized Losses Estimated Fair Value September 30, 2017 Municipal bonds $ 3,245 $ 175 $ (3 ) $ 3,417 Agency mortgage-backed securities 2,221 50 - 2,271 Total $ 5,466 $ 225 $ (3 ) $ 5,688 December 31, 2016 Municipal bonds $ 3,262 $ 127 $ (36 ) $ 3,353 Agency mortgage-backed securities 2,858 49 (3 ) 2,904 Non-agency mortgage-backed securities 362 - (15 ) 347 Total $ 6,482 $ 176 $ (54 ) $ 6,604
Amortized Cost and Fair Value of Investments Available-for-Sale by Contractual Maturity	The amortized cost and fair value of AFS securities at September 30, 2017, by contractual maturity, are shown below (in thousands). Expected maturities of AFS securities may differ from contractual maturities because borrowers may have the right to call or prepay obligations with or without call or prepayment penalties. Investments not due at a single maturity date, primarily mortgage-backed investments, are shown separately. September 30, 2017 Amortized Cost Fair Value Due after one year through five years $ 1,333 $ 1,329 Due after five years through ten years 413 443 Due after ten years 1,499 1,645 Mortgage-backed securities 2,221 2,271 Total $ 5,466 $ 5,688
Aggregate Fair Value and Gross Unrealized Loss in Continuous Unrealized Loss Position	The following tables summarize the aggregate fair value and gross unrealized loss by length of time of those investments that have been in a continuous unrealized loss position at the dates indicated (in thousands): September 30, 2017 Less Than 12 Months 12 Months or Longer Total Fair Value Unrealized Loss Fair Value Unrealized Loss Fair Value Unrealized Loss Municipal bonds $ 456 $ (1 ) $ 874 $ (2 ) $ 1,330 $ (3 ) Agency mortgage-backed securities - - - - - - Total $ 456 $ (1 ) $ 874 $ (2 ) $ 1,330 $ (3 ) December 31, 2016 Less Than 12 Months 12 Months or Longer Total Fair Value Unrealized Loss Fair Value Unrealized Loss Fair Value Unrealized Loss Municipal bonds $ 1,313 $ (36 ) $ - $ - $ 1,313 $ (36 ) Agency mortgage-backed securities - - 1,125 (3 ) 1,125 (3 ) Non-agency mortgage-backed securities - - 347 (15 ) 347 (15 ) Total $ 1,313 $ (36 ) $ 1,472 $ (18 ) $ 2,785 $ (54 )

Loans (Tables)

Loans (Tables)	9 Months Ended
	Sep. 30, 2017
Loans [Abstract]
Composition of Loan Portfolio, Excluding Loans Held for Sale	The composition of the loan portfolio at the dates indicated, excluding loans held-for-sale, was as follows (in thousands): September 30, 2017 December 31, 2016 Real estate loans: One- to four- family $ 156,871 $ 152,386 Home equity 29,129 27,771 Commercial and multifamily 201,411 181,004 Construction and land 54,921 70,915 Total real estate loans $ 442,332 $ 432,076 Consumer loans: Manufactured homes 16,864 15,494 Floating homes 26,699 23,996 Other consumer 5,032 3,932 Total consumer loans 48,595 43,422 Commercial business loans 39,158 26,331 Total loans 530,085 501,829 Deferred fees (1,877 ) (1,828 ) Total loans, gross 528,208 500,001 Allowance for loan losses (4,991 ) (4,822 ) Total loans, net $ 523,217 $ 495,179
Allowance for Loan Losses and Recorded Investment in Loans by Portfolio Segment and Based on Impairment Method	The following table presents the balance in the allowance for loan losses and the recorded investment in loans by portfolio segment and based on impairment method as of September 30, 2017 (in thousands): One- to four- family Home equity Commercial and multifamily Construction and land Manufactured homes Floating homes Other consumer Commercial business Unallocated Total Allowance for loan losses: Individually evaluated for impairment $ 377 $ 168 $ - $ 32 $ 70 $ - $ 57 $ 276 $ - $ 980 Collectively evaluated for impairment 874 183 1,185 327 110 154 41 231 906 4,011 Ending balance $ 1,251 $ 351 $ 1,185 $ 359 $ 180 $ 154 $ 98 $ 507 $ 906 $ 4,991 Loans receivable: Individually evaluated for impairment $ 6,664 $ 1,007 $ 1,717 $ 99 $ 309 $ - $ 57 $ 357 $ - $ 10,210 Collectively evaluated for impairment 150,207 28,122 199,694 54,822 16,555 26,699 4,975 38,801 - 519,875 Ending balance $ 156,871 $ 29,129 $ 201,411 $ 54,921 $ 16,864 $ 26,699 $ 5,032 $ 39,158 $ - $ 530,085 The following table presents the balance in the allowance for loan losses and the recorded investment in loans by portfolio segment and based on impairment method as of December 31, 2016 (in thousands): One- to four- family Home equity Commercial and multifamily Construction and land Manufactured homes Floating homes Other consumer Commercial business Unallocated Total Allowance for loan losses: Individually evaluated for impairment $ 536 $ 121 $ 24 $ 35 $ 59 $ - $ 65 $ 23 $ - $ 863 Collectively evaluated for impairment 1,006 257 1,120 424 109 132 47 152 712 3,959 Ending balance $ 1,542 $ 378 $ 1,144 $ 459 $ 168 $ 132 $ 112 $ 175 $ 712 $ 4,822 Loans receivable: Individually evaluated for impairment $ 4,749 $ 832 $ 1,582 $ 83 $ 312 $ - $ 62 $ 616 $ - $ 8,236 Collectively evaluated for impairment 147,637 26,939 179,422 70,832 15,182 23,996 3,870 25,715 - 493,593 Ending balance $ 152,386 $ 27,771 $ 181,004 $ 70,915 $ 15,494 $ 23,996 $ 3,932 $ 26,331 $ - $ 501,829
Activity in Allowance for Loan Losses	The following table summarizes the activity in the allowance for loan losses for the three months ended September 30, 2017 (in thousands): Beginning Allowance Charge-offs Recoveries Provision Ending Allowance One- to four- family $ 1,302 $ - $ - $ (51 ) $ 1,251 Home equity 431 (89 ) 1 8 351 Commercial and multifamily 1,153 - - 32 1,185 Construction and land 352 - - 7 359 Manufactured homes 178 (7 ) - 9 180 Floating homes 146 - - 8 154 Other consumer 98 (1 ) 2 (1 ) 98 Commercial business 364 - - 143 507 Unallocated 811 - - 95 906 Total $ 4,835 $ (97 ) $ 3 $ 250 $ 4,991 The following table summarizes the activity in the allowance for loan losses for the nine months ended September 30, 2017 (in thousands): Beginning Allowance Charge-offs Recoveries Provision Ending Allowance One- to four- family $ 1,542 $ - $ - $ (291 ) $ 1,251 Home equity 378 (89 ) 30 32 351 Commercial and multifamily 1,144 (24 ) 1 64 1,185 Construction and land 459 - - (100 ) 359 Manufactured homes 168 (13 ) 3 22 180 Floating homes 132 - - 22 154 Other consumer 112 (8 ) 19 (25 ) 98 Commercial business 175 - - 332 507 Unallocated 712 - - 194 906 Total $ 4,822 $ (134 ) $ 53 $ 250 $ 4,991 The following table summarizes the activity in the allowance for loan losses for the three months ended September 30, 2016 (in thousands): Beginning Allowance Charge-offs Recoveries Provision Ending Allowance One- to four- family $ 1,713 $ - $ - $ (55 ) $ 1,658 Home equity 501 (14 ) 10 (73 ) 424 Commercial and multifamily 1,377 - - (17 ) 1,360 Construction and land 388 - 18 (33 ) 373 Manufactured homes 189 - 2 (14 ) 177 Floating homes 132 - - - 132 Other consumer 89 (10 ) 15 (28 ) 66 Commercial business 171 - - 10 181 Unallocated 278 - - 210 488 Total $ 4,838 $ (24 ) $ 45 $ - $ 4,859 The following table summarizes the activity in the allowance for loan losses for the nine months ended September 30, 2016 (in thousands): Beginning Allowance Charge-offs Recoveries Provision Ending Allowance One- to four- family $ 1,839 $ (72 ) $ - $ (109 ) $ 1,658 Home equity 607 (14 ) - (169 ) 424 Commercial and multifamily 921 - - 439 1,360 Construction and land 382 - 18 (27 ) 373 Manufactured homes 301 - 75 (199 ) 177 Floating homes 111 - - 21 132 Other consumer 77 (31 ) 7 13 66 Commercial business 157 (29 ) 19 34 181 Unallocated 241 - - 247 488 Total $ 4,636 $ (146 ) $ 119 $ 250 $ 4,859
Credit Quality Indicators	The following table represents the internally assigned grades as of September 30, 2017, by type of loan (in thousands): One- to four- family Home equity Commercial and multifamily Construction and land Manufactured homes Floating homes Other consumer Commercial business Total Grade: Pass $ 151,786 $ 28,321 $ 192,817 $ 54,872 $ 16,711 $ 26,699 $ 4,975 $ 38,396 $ 514,577 Watch 246 - 6,876 - - - - 494 7,616 Special Mention 138 - 360 - - - - 134 632 Substandard 4,701 808 1,358 49 153 - 57 134 7,260 Doubtful - - - - - - - - - Loss - - - - - - - - - Total $ 156,871 $ 29,129 $ 201,411 $ 54,921 $ 16,864 $ 26,699 $ 5,032 $ 39,158 $ 530,085 The following table represents the internally assigned grades as of December 31, 2016, by type of loan (in thousands): One- to four- family Home equity Commercial and multifamily Construction and land Manufactured homes Floating homes Other consumer Commercial business Total Grade: Pass $ 148,617 $ 26,547 $ 171,678 $ 67,539 $ 15,288 $ 23,996 $ 3,821 $ 25,625 $ 483,111 Watch 998 536 8,105 3,376 78 - 49 326 13,468 Special Mention 139 - - - 30 - - - 169 Substandard 2,632 688 1,221 - 98 - 62 380 5,081 Doubtful - - - - - - - - - Loss - - - - - - - - - Total $ 152,386 $ 27,771 $ 181,004 $ 70,915 $ 15,494 $ 23,996 $ 3,932 $ 26,331 $ 501,829
Nonaccrual Loans	The following table presents the recorded investment in nonaccrual loans as of September 30, 2017, and December 31, 2016, by type of loan (in thousands): September 30, 2017 December 31, 2016 One- to four- family $ 878 $ 2,169 Home equity 700 536 Commercial and multifamily 206 218 Construction and land 49 - Manufactured homes 133 72 Commercial business 134 149 Total $ 2,100 $ 3,144
Aging of Recorded Investment in Past Due Loans	The following table represents the aging of the recorded investment in past due loans as of September 30, 2017, by type of loan (in thousands): 30-59 Days Past Due 60-89 Days Past Due 90 Days and Greater Past Due 90 Days and Greater Past Due and Still Accruing Total Past Due Current Total Loans One- to four- family $ 64 $ 1,723 $ 705 $ - $ 2,492 $ 154,379 $ 156,871 Home equity 346 28 607 - 981 28,148 29,129 Commercial and multifamily 206 - - - 206 201,205 201,411 Construction and land 43 49 49 - 141 54,780 54,921 Manufactured homes 23 103 107 - 233 16,631 16,864 Floating homes - - - - - 26,699 26,699 Other consumer 49 6 - - 55 4,977 5,032 Commercial business 409 47 - - 456 38,702 39,158 Total $ 1,140 $ 1,956 $ 1,468 $ - $ 4,564 $ 525,521 $ 530,085 The following table represents the aging of the recorded investment in past due loans as of December 31, 2016, by type of loan (in thousands): 30-59 Days Past Due 60-89 Days Past Due 90 Days and Greater Past Due 90 Days and Greater Past Due and Still Accruing Total Past Due Current Total Loans One- to four- family $ 2,476 $ 161 $ 1,787 $ - $ 4,424 $ 147,962 $ 152,386 Home equity 460 - 494 - 954 26,817 27,771 Commercial and multifamily - - - - - 181,004 181,004 Construction and land 440 - - - 440 70,475 70,915 Manufactured homes 321 28 62 - 411 15,083 15,494 Floating homes - - - - - 23,996 23,996 Other consumer 26 1 - - 27 3,905 3,932 Commercial business 149 - - - 149 26,182 26,331 Total $ 3,872 $ 190 $ 2,343 $ - $ 6,405 $ 495,424 $ 501,829
Credit Risk Profile of Loan Portfolio Based on Payment Activity by Type of Loan	The following table represents the credit risk profile of our loan portfolio based on payment activity as of September 30, 2017, by type of loan (in thousands): One- to four- family Home equity Commercial and multifamily Construction and land Manufactured homes Floating homes Other consumer Commercial business Total Performing $ 154,679 $ 28,429 $ 201,205 $ 54,872 $ 16,731 $ 26,699 $ 5,032 $ 38,935 $ 526,582 Nonperforming 2,192 700 206 49 133 - - 223 3,503 Total $ 156,871 $ 29,129 $ 201,411 $ 54,921 $ 16,864 $ 26,699 $ 5,032 $ 39,158 $ 530,085 The following table represents the credit risk profile of our loan portfolio based on payment activity as of December 31, 2016, by type of loan (in thousands): One- to four- family Home equity Commercial and multifamily Construction and land Manufactured homes Floating homes Other consumer Commercial business Total Performing $ 150,170 $ 27,218 $ 180,786 $ 70,915 $ 15,374 $ 23,996 $ 3,932 $ 26,089 $ 498,480 Nonperforming 2,216 553 218 - 120 - - 242 3,349 Total $ 152,386 $ 27,771 $ 181,004 $ 70,915 $ 15,494 $ 23,996 $ 3,932 $ 26,331 $ 501,829
Schedule of Impaired Loans, Individually Evaluated	Impaired loans at September 30, 2017 and December 31, 2016, by type of loan were as follows (in thousands): September 30, 2017 Recorded Investment Unpaid Principal Balance Without Allowance With Allowance Total Recorded Investment Related Allowance One- to four- family $ 6,971 $ 3,403 $ 3,261 $ 6,664 $ 377 Home equity 1,125 487 520 1,007 168 Commercial and multifamily 1,737 1,717 - 1,717 - Construction and land 99 58 41 99 32 Manufactured homes 331 133 176 309 70 Other consumer 57 - 57 57 57 Commercial business 371 - 357 357 276 Total $ 10,691 $ 5,798 $ 4,412 $ 10,210 $ 980 December 31, 2016 Recorded Investment Unpaid Principal Balance Without Allowance With Allowance Total Recorded Investment Related Allowance One- to four- family $ 5,010 $ 2,454 $ 2,295 $ 4,749 $ 536 Home equity 913 446 386 832 121 Commercial and multifamily 1,582 1,221 361 1,582 24 Construction and land 83 - 83 83 35 Manufactured homes 326 91 221 312 59 Other consumer 62 - 62 62 65 Commercial business 616 143 473 616 23 Total $ 8,592 $ 4,355 $ 3,881 $ 8,236 $ 863 Income on impaired loans for the three and nine months ended September 30, 2017 and December 31, 2016, by type of loan were as follows (in thousands): Three Months Ended September 30, 2017 Three Months Ended September 30, 2016 Average Recorded Investment Interest Income Recognized Average Recorded Investment Interest Income Recognized One- to four- family $ 6,603 $ 117 $ 5,445 $ 58 Home equity 1,008 10 968 4 Commercial and multifamily 1,732 24 4,365 19 Construction and land 114 (1 ) 86 1 Manufactured homes 306 9 383 6 Other consumer 58 1 24 - Commercial business 348 5 640 9 Total $ 10,169 $ 165 $ 11,911 $ 97 Nine Months Ended September 30, 2017 Nine Months Ended September 30, 2016 Average Recorded Investment Interest Income Recognized Average Recorded Investment Interest Income Recognized One- to four- family $ 5,718 $ 269 $ 5,533 $ 197 Home equity 921 30 944 31 Commercial and multifamily 1,652 72 3,902 152 Construction and land 91 2 88 3 Manufactured homes 311 19 377 23 Other consumer 60 3 20 2 Commercial business 487 16 474 27 Total $ 9,240 $ 411 $ 11,338 $ 435

Fair Value Measurements (Tables

Fair Value Measurements (Tables)	9 Months Ended
	Sep. 30, 2017
Fair Value Measurements [Abstract]
Information about Level in Fair Value Hierarchy for Financial Instruments	The following tables present information about the level in the fair value hierarchy for the Company's financial assets and liabilities, whether or not recognized or recorded at fair value as of September 30, 2017 and December 31, 2016 (in thousands): September 30, 2017 Fair Value Measurements Using: Carrying Value Estimated Fair Value Level 1 Level 2 Level 3 FINANCIAL ASSETS: Cash and cash equivalents $ 60,651 $ 60,651 $ 60,651 $ - $ - Available-for-sale securities 5,688 5,688 - 5,688 - Loans held-for-sale 296 296 - 296 - Loans receivable, net 523,217 522,167 - - 522,167 Accrued interest receivable 1,943 1,943 1,943 - - Mortgage servicing rights 3,370 3,370 - - 3,370 FHLB stock 1,825 1,825 - - 1,825 FINANCIAL LIABILITIES: Non-maturity deposits 361,201 361,201 - 361,201 - Time deposits 163,616 161,434 - 161,434 - Borrowings 28,000 28,000 - 28,000 - Accrued interest payable 68 68 - 68 - December 31, 2016 Fair Value Measurements Using: Carrying Value Estimated Fair Value Level 1 Level 2 Level 3 FINANCIAL ASSETS: Cash and cash equivalents $ 54,582 $ 54,582 $ 54,582 $ - $ - Available-for-sale securities 6,604 6,604 - 6,257 347 Loans held for sale 871 871 - 871 - Loans receivable, net 495,179 494,289 - - 494,289 Accrued interest receivable 1,816 1,816 1,816 - - Mortgage servicing rights 3,561 3,561 - - 3,561 FHLB Stock 2,840 2,840 - - 2,840 FINANCIAL LIABILITIES: Non-maturity deposits 307,989 307,989 - 307,989 - Time deposits 159,742 159,333 - 159,333 - Borrowings 54,792 54,805 - 54,805 - Accrued interest payable 73 73 - 73 -
Fair Value of Assets Measured on Recurring Basis	The following tables present the balance of assets measured at fair value on a recurring basis as of September 30, 2017 and December 31, 2016 (in thousands): Fair Value at September 30, 2017 Description Total Level 1 Level 2 Level 3 Municipal bonds $ 3,417 $ - $ 3,417 $ - Agency mortgage-backed securities 2,271 - 2,271 - Mortgage servicing rights 3,370 - - 3,370 Fair Value at December 31, 2016 Description Total Level 1 Level 2 Level 3 Municipal bonds $ 3,353 $ - $ 3,353 $ - Agency mortgage-backed securities 2,904 - 2,904 - Non-agency mortgage-backed securities 347 - - 347 Mortgage servicing rights 3,561 - - 3,561
Reconciliation of Assets and Liabilities Measured at Fair Value Using Significant Unobservable Inputs (Level 3)	The following table provides a reconciliation of assets and liabilities (excluding mortgage servicing rights) measured at fair value using significant unobservable inputs (Level 3) on a recurring basis during the three and nine months ended September 30, 2017 and 2016 (in thousands): Three Months Ended September 30, Nine Months Ended September 30, 2017 2016 2017 2016 Beginning balance, at fair value $ 318 $ 379 $ 347 $ 428 OTTI impairment losses - - - - Sales, redemptions and principal payments (318 ) (29 ) (347 ) (90 ) Change in unrealized loss - 5 - 17 Ending balance, at fair value $ - $ 355 $ - $ 355
Fair Value of Assets Measured on Nonrecurring Basis	The following tables present the balance of assets measured at fair value on a nonrecurring basis at the dates indicated (in thousands): Fair Value at September 30, 2017 Total Level 1 Level 2 Level 3 OREO and repossessed assets $ 1,032 $ - $ - $ 1,032 Impaired loans 10,210 - - 10,210 Fair Value at December 31, 2016 Total Level 1 Level 2 Level 3 OREO and repossessed assets $ 1,172 $ - $ - $ 1,172 Impaired loans 8,236 - - 8,236
Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value of Assets, Quantitative Information	The following tables provide a description of the valuation technique, unobservable input, and qualitative information about the unobservable inputs for the Company's assets and liabilities classified as Level 3 and measured at fair value on a recurring basis at September 30, 2017 and December 31, 2016: September 30, 2017 Financial Instrument Valuation Technique Unobservable Input(s) Range (Weighted-Average) Mortgage Servicing Rights Discounted cash flow Prepayment speed assumption 109-412% (164%) Discount rate 13-15% (13%) December 31, 2016 Financial Instrument Valuation Technique Unobservable Input(s) Range (Weighted-Average) Mortgage Servicing Rights Discounted cash flow Prepayment speed assumption 104-396% (152%) Discount rate 13%-15% (13%) Non-agency mortgage-backed securities Discounted cash flow Discount rate 7%-9% (8%)

Mortgage Servicing Rights (Tabl

Mortgage Servicing Rights (Tables)	9 Months Ended
	Sep. 30, 2017
Mortgage Servicing Rights [Abstract]
Mortgage Service Rights Assumptions	The key economic assumptions used in determining the fair value of mortgage servicing rights at the dates indicated are as follows: September 30, 2017 December 31, 2016 Prepayment speed (Public Securities Association "PSA" model) 164 % 152 % Weighted-average life 7.0 years 7.2 years Yield to maturity discount rate 13 % 13 %

Earnings Per Common Share (Tabl

Earnings Per Common Share (Tables)	9 Months Ended
	Sep. 30, 2017
Earnings Per Common Share [Abstract]
Earnings per Common Share	Earnings per share are summarized for the periods presented in the following table (in thousands, except per share data): Three Months Ended September 30, Nine Months Ended September 30, 2017 2016 2017 2016 Net income $ 1,222 $ 1,454 $ 3,939 $ 3,814 Weighted-average number of shares outstanding, basic 2,507 2,490 2,502 2,483 Effect of potentially dilutive common shares (1) 55 78 61 74 Weighted-average number of shares outstanding, diluted 2,562 2,568 2,563 2,557 Earnings per share, basic $ 0.49 $ 0.58 $ 1.57 $ 1.54 Earnings per share, diluted $ 0.48 $ 0.57 $ 1.54 $ 1.48 (1)

Stock-based Compensation (Table

Stock-based Compensation (Tables)	9 Months Ended
	Sep. 30, 2017
Stock-based Compensation [Abstract]
Summary of Stock Option Plan Award Activity	The stock option awards granted to date under the 2008 Plan vest in 20 percent annual increments commencing one year from the grant date in accordance with the requirements of the 2008 Plan. The stock option awards granted to date under the 2013 Plan vest in equal annual installments of either two or four years. All of the options granted under the Plans are exercisable for a period of 10 years from the date of grant, subject to vesting. The following is a summary of the Company's stock option award activity during the nine months ended September 30, 2017: Shares Weighted- Average Exercise Price Weighted-Average Remaining Contractual Term In Years Aggregate Intrinsic Value Outstanding at January 1, 2017 170,057 $ 15.41 6.44 $ 2,141,018 Granted 32,010 28.34 Exercised (14,018 ) 9.88 Forfeited (604 ) 28.21 Expired - - Outstanding at September 30, 2017 187,445 17.99 6.48 3,000,547 Exercisable 119,885 16.27 5.87 $ 2,125,564 Expected to vest, assuming a 0% forfeiture rate over the vesting term 67,560 $ 21.05 7.56 $ 874,983
Weighted-average Assumptions Used in Determining Fair Value of Options Granted	The fair value of each option grant is estimated as of the grant date using the Black-Scholes option-pricing model. The fair value of options granted for the nine months ended September 30, 2017 was determined using the following weighted-average assumptions as of the grant date. Annual dividend yield 1.28 % Expected volatility 22.99 % Risk-free interest rate 2.20 % Expected term 6.50 years Weighted-average grant date fair value per option granted $ 6.62 The fair value of options granted for the nine months ended September 30, 2016 was determined using the following weighted-average assumptions as of the grant date. Annual dividend yield 1.03 % Expected volatility 25.48 % Risk-free interest rate 1.64 % Expected term 6.92 years Weighted-average grant date fair value per option granted $ 5.78
Summary of Outstanding Restricted Stock Awards	The following is a summary of the Company's restricted stock award activity during the nine months ended September 30, 2017: Shares Weighted-Average Grant-Date Fair Value Per Share Non-vested at January 1, 2017 26,138 $ 18.08 Granted 576 28.34 Vested (14,929 ) 17.61 Forfeited - - Expired - - Non-vested at September 30, 2017 11,785 19.05 Expected to vest assuming a 0% forfeiture rate over the vesting term 11,785 $ 19.05

Investments (Details)

Investments (Details) - USD ($) $ in Thousands	Sep. 30, 2017	Dec. 31, 2016
Schedule of Available-for-sale Securities [Line Items]
Amortized cost	$ 5,466	$ 6,482
Gross unrealized gains	225	176
Gross unrealized losses	(3)	(54)
Estimated fair value	5,688	6,604
Municipal Bonds [Member]
Schedule of Available-for-sale Securities [Line Items]
Amortized cost	3,245	3,262
Gross unrealized gains	175	127
Gross unrealized losses	(3)	(36)
Estimated fair value	3,417	3,353
Agency Mortgage-backed Securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Amortized cost	2,221	2,858
Gross unrealized gains	50	49
Gross unrealized losses	0	(3)
Estimated fair value	$ 2,271	2,904
Non-agency Mortgage-backed Securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Amortized cost		362
Gross unrealized gains		0
Gross unrealized losses		(15)
Estimated fair value		$ 347

Investments, Mortgage-backed Se

Investments, Mortgage-backed Securities by Contractual Maturity (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016	Dec. 31, 2016
Available-for-sale Securities by Contractual Maturity, Amortized Cost [Abstract]
Due after one year through five years	$ 1,333		$ 1,333
Due after five years through ten years	413		413
Due after ten years	1,499		1,499
Mortgage-backed securities	2,221		2,221
Total	5,466		5,466
Available-for-sale Securities by Contractual Maturity, Fair Value [Abstract]
Due after one year through five years	1,329		1,329
Due after five years through ten years	443		443
Due after ten years	1,645		1,645
Mortgage-backed securities	2,271		2,271
Total	5,688		5,688
Pledged securities	0		0		$ 0
Sales of available for sale securities	$ 0	$ 0	$ 0	$ 0

Investments, Securities in Cont

Investments, Securities in Continuous Unrealized Loss Position (Details) $ in Thousands	Sep. 30, 2017USD ($)Security	Dec. 31, 2016USD ($)Security	Sep. 30, 2016USD ($)
Continuous Unrealized Loss Position, Fair Value [Abstract]
Less than 12 months	$ 456	$ 1,313
12 months or longer	874	1,472
Total	1,330	2,785
Continuous Unrealized Loss Position, Unrealized Loss [Abstract]
Less than 12 months	(1)	(36)
12 months or longer	(2)	(18)
Total	(3)	(54)
Municipal Bonds [Member]
Continuous Unrealized Loss Position, Fair Value [Abstract]
Less than 12 months	456	1,313
12 months or longer	874	0
Total	1,330	1,313
Continuous Unrealized Loss Position, Unrealized Loss [Abstract]
Less than 12 months	(1)	(36)
12 months or longer	(2)	0
Total	$ (3)	$ (36)
Number of securities in unrealized loss position for less than 12 months | Security	2	3
Number of securities in unrealized loss position for over 12 months | Security	1
Agency Mortgage-backed Securities [Member]
Continuous Unrealized Loss Position, Fair Value [Abstract]
Less than 12 months	$ 0	$ 0
12 months or longer	0	1,125
Total	0	1,125
Continuous Unrealized Loss Position, Unrealized Loss [Abstract]
Less than 12 months	0	0
12 months or longer	0	(3)
Total	0	$ (3)
Number of securities in unrealized loss position for over 12 months | Security		1
Non-agency Mortgage-backed Securities [Member]
Continuous Unrealized Loss Position, Fair Value [Abstract]
Less than 12 months		$ 0
12 months or longer		347
Total		347
Continuous Unrealized Loss Position, Unrealized Loss [Abstract]
Less than 12 months		0
12 months or longer		(15)
Total		$ (15)
Credit losses recognized in earnings	$ 0		$ 0
Number of securities in unrealized loss position for over 12 months | Security		1

Loans, Composition of Loan Port

Loans, Composition of Loan Portfolio (Details) - USD ($) $ in Thousands	Sep. 30, 2017	Jun. 30, 2017	Dec. 31, 2016	Sep. 30, 2016	Jun. 30, 2016	Dec. 31, 2015
Composition of Loan Portfolio [Abstract]
Total loans	$ 530,085		$ 501,829
Deferred fees	(1,877)		(1,828)
Total loans, gross	528,208		500,001
Allowance for loan losses	(4,991)	$ (4,835)	(4,822)	$ (4,859)	$ (4,838)	$ (4,636)
Total loans, net	523,217		495,179
One-to Four- Family [Member]
Composition of Loan Portfolio [Abstract]
Total loans	156,871		152,386
Allowance for loan losses	(1,251)	(1,302)	(1,542)	(1,658)	(1,713)	(1,839)
Home Equity [Member]
Composition of Loan Portfolio [Abstract]
Total loans	29,129		27,771
Allowance for loan losses	(351)	(431)	(378)	(424)	(501)	(607)
Commercial and Multifamily [Member]
Composition of Loan Portfolio [Abstract]
Total loans	201,411		181,004
Allowance for loan losses	(1,185)	(1,153)	(1,144)	(1,360)	(1,377)	(921)
Construction and Land [Member]
Composition of Loan Portfolio [Abstract]
Total loans	54,921		70,915
Allowance for loan losses	(359)	(352)	(459)	(373)	(388)	(382)
Manufactured Homes [Member]
Composition of Loan Portfolio [Abstract]
Total loans	16,864		15,494
Allowance for loan losses	(180)	(178)	(168)	(177)	(189)	(301)
Floating Homes [Member]
Composition of Loan Portfolio [Abstract]
Total loans	26,699		23,996
Allowance for loan losses	(154)	(146)	(132)	(132)	(132)	(111)
Other Consumer [Member]
Composition of Loan Portfolio [Abstract]
Total loans	5,032		3,932
Allowance for loan losses	(98)	(98)	(112)	(66)	(89)	(77)
Real Estate Loans [Member]
Composition of Loan Portfolio [Abstract]
Total loans	442,332		432,076
Real Estate Loans [Member] | One-to Four- Family [Member]
Composition of Loan Portfolio [Abstract]
Total loans	156,871		152,386
Real Estate Loans [Member] | Home Equity [Member]
Composition of Loan Portfolio [Abstract]
Total loans	29,129		27,771
Real Estate Loans [Member] | Commercial and Multifamily [Member]
Composition of Loan Portfolio [Abstract]
Total loans	201,411		181,004
Real Estate Loans [Member] | Construction and Land [Member]
Composition of Loan Portfolio [Abstract]
Total loans	54,921		70,915
Consumer Loans [Member]
Composition of Loan Portfolio [Abstract]
Total loans	48,595		43,422
Consumer Loans [Member] | Manufactured Homes [Member]
Composition of Loan Portfolio [Abstract]
Total loans	16,864		15,494
Consumer Loans [Member] | Floating Homes [Member]
Composition of Loan Portfolio [Abstract]
Total loans	26,699		23,996
Consumer Loans [Member] | Other Consumer [Member]
Composition of Loan Portfolio [Abstract]
Total loans	5,032		3,932
Commercial Business Loans [Member]
Composition of Loan Portfolio [Abstract]
Total loans	39,158		26,331
Allowance for loan losses	$ (507)	$ (364)	$ (175)	$ (181)	$ (171)	$ (157)

Loans, Allowance for Loan Losse

Loans, Allowance for Loan Losses and Recorded Investment in Loans by Portfolio Segment and Based on Impairment Method (Details) - USD ($) $ in Thousands	Sep. 30, 2017	Jun. 30, 2017	Dec. 31, 2016	Sep. 30, 2016	Jun. 30, 2016	Dec. 31, 2015
Allowance for loan losses [Abstract]
Individually evaluated for impairment	$ 980		$ 863
Collectively evaluated for impairment	4,011		3,959
Ending balance	4,991	$ 4,835	4,822	$ 4,859	$ 4,838	$ 4,636
Loans receivable [Abstract]
Individually evaluated for impairment	10,210		8,236
Collectively evaluated for impairment	519,875		493,593
Total loans	530,085		501,829
One-to Four- Family [Member]
Allowance for loan losses [Abstract]
Individually evaluated for impairment	377		536
Collectively evaluated for impairment	874		1,006
Ending balance	1,251	1,302	1,542	1,658	1,713	1,839
Loans receivable [Abstract]
Individually evaluated for impairment	6,664		4,749
Collectively evaluated for impairment	150,207		147,637
Total loans	156,871		152,386
Home Equity [Member]
Allowance for loan losses [Abstract]
Individually evaluated for impairment	168		121
Collectively evaluated for impairment	183		257
Ending balance	351	431	378	424	501	607
Loans receivable [Abstract]
Individually evaluated for impairment	1,007		832
Collectively evaluated for impairment	28,122		26,939
Total loans	29,129		27,771
Commercial and Multifamily [Member]
Allowance for loan losses [Abstract]
Individually evaluated for impairment	0		24
Collectively evaluated for impairment	1,185		1,120
Ending balance	1,185	1,153	1,144	1,360	1,377	921
Loans receivable [Abstract]
Individually evaluated for impairment	1,717		1,582
Collectively evaluated for impairment	199,694		179,422
Total loans	201,411		181,004
Construction and Land [Member]
Allowance for loan losses [Abstract]
Individually evaluated for impairment	32		35
Collectively evaluated for impairment	327		424
Ending balance	359	352	459	373	388	382
Loans receivable [Abstract]
Individually evaluated for impairment	99		83
Collectively evaluated for impairment	54,822		70,832
Total loans	54,921		70,915
Manufactured Homes [Member]
Allowance for loan losses [Abstract]
Individually evaluated for impairment	70		59
Collectively evaluated for impairment	110		109
Ending balance	180	178	168	177	189	301
Loans receivable [Abstract]
Individually evaluated for impairment	309		312
Collectively evaluated for impairment	16,555		15,182
Total loans	16,864		15,494
Floating Homes [Member]
Allowance for loan losses [Abstract]
Individually evaluated for impairment	0		0
Collectively evaluated for impairment	154		132
Ending balance	154	146	132	132	132	111
Loans receivable [Abstract]
Individually evaluated for impairment	0		0
Collectively evaluated for impairment	26,699		23,996
Total loans	26,699		23,996
Other Consumer [Member]
Allowance for loan losses [Abstract]
Individually evaluated for impairment	57		65
Collectively evaluated for impairment	41		47
Ending balance	98	98	112	66	89	77
Loans receivable [Abstract]
Individually evaluated for impairment	57		62
Collectively evaluated for impairment	4,975		3,870
Total loans	5,032		3,932
Commercial Business [Member]
Allowance for loan losses [Abstract]
Individually evaluated for impairment	276		23
Collectively evaluated for impairment	231		152
Ending balance	507	364	175	181	171	157
Loans receivable [Abstract]
Individually evaluated for impairment	357		616
Collectively evaluated for impairment	38,801		25,715
Total loans	39,158		26,331
Unallocated [Member]
Allowance for loan losses [Abstract]
Individually evaluated for impairment	0		0
Collectively evaluated for impairment	906		712
Ending balance	906	$ 811	712	$ 488	$ 278	$ 241
Loans receivable [Abstract]
Individually evaluated for impairment	0		0
Collectively evaluated for impairment	0		0
Total loans	$ 0		$ 0

Loans, Activity in Allowance fo

Loans, Activity in Allowance for Loan Losses (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Summary of activity in allowance for loan losses [Roll Forward]
Beginning allowance	$ 4,835	$ 4,838	$ 4,822	$ 4,636
Charge-offs	(97)	(24)	(134)	(146)
Recoveries	3	45	53	119
Provision	250	0	250	250
Ending allowance	4,991	4,859	4,991	4,859
One-to Four- Family [Member]
Summary of activity in allowance for loan losses [Roll Forward]
Beginning allowance	1,302	1,713	1,542	1,839
Charge-offs	0	0	0	(72)
Recoveries	0	0	0	0
Provision	(51)	(55)	(291)	(109)
Ending allowance	1,251	1,658	1,251	1,658
Home Equity [Member]
Summary of activity in allowance for loan losses [Roll Forward]
Beginning allowance	431	501	378	607
Charge-offs	(89)	(14)	(89)	(14)
Recoveries	1	10	30	0
Provision	8	(73)	32	(169)
Ending allowance	351	424	351	424
Commercial and Multifamily [Member]
Summary of activity in allowance for loan losses [Roll Forward]
Beginning allowance	1,153	1,377	1,144	921
Charge-offs	0	0	(24)	0
Recoveries	0	0	1	0
Provision	32	(17)	64	439
Ending allowance	1,185	1,360	1,185	1,360
Construction and Land [Member]
Summary of activity in allowance for loan losses [Roll Forward]
Beginning allowance	352	388	459	382
Charge-offs	0	0	0	0
Recoveries	0	18	0	18
Provision	7	(33)	(100)	(27)
Ending allowance	359	373	359	373
Manufactured Homes [Member]
Summary of activity in allowance for loan losses [Roll Forward]
Beginning allowance	178	189	168	301
Charge-offs	(7)	0	(13)	0
Recoveries	0	2	3	75
Provision	9	(14)	22	(199)
Ending allowance	180	177	180	177
Floating Homes [Member]
Summary of activity in allowance for loan losses [Roll Forward]
Beginning allowance	146	132	132	111
Charge-offs	0	0	0	0
Recoveries	0	0	0	0
Provision	8	0	22	21
Ending allowance	154	132	154	132
Other Consumer [Member]
Summary of activity in allowance for loan losses [Roll Forward]
Beginning allowance	98	89	112	77
Charge-offs	(1)	(10)	(8)	(31)
Recoveries	2	15	19	7
Provision	(1)	(28)	(25)	13
Ending allowance	98	66	98	66
Commercial Business [Member]
Summary of activity in allowance for loan losses [Roll Forward]
Beginning allowance	364	171	175	157
Charge-offs	0	0	0	(29)
Recoveries	0	0	0	19
Provision	143	10	332	34
Ending allowance	507	181	507	181
Unallocated [Member]
Summary of activity in allowance for loan losses [Roll Forward]
Beginning allowance	811	278	712	241
Charge-offs	0	0	0	0
Recoveries	0	0	0	0
Provision	95	210	194	247
Ending allowance	$ 906	$ 488	$ 906	$ 488

Loans, Credit Quality (Details)

Loans, Credit Quality (Details) - USD ($) $ in Thousands	Sep. 30, 2017	Dec. 31, 2016
Financing Receivable, Recorded Investment [Line Items]
Total loans	$ 530,085	$ 501,829
Pass [Member]
Financing Receivable, Recorded Investment [Line Items]
Total loans	514,577	483,111
Watch [Member]
Financing Receivable, Recorded Investment [Line Items]
Total loans	7,616	13,468
Special Mention [Member]
Financing Receivable, Recorded Investment [Line Items]
Total loans	632	169
Substandard [Member]
Financing Receivable, Recorded Investment [Line Items]
Total loans	7,260	5,081
Doubtful [Member]
Financing Receivable, Recorded Investment [Line Items]
Total loans	0	0
Loss [Member]
Financing Receivable, Recorded Investment [Line Items]
Total loans	0	0
One-to Four- Family [Member]
Financing Receivable, Recorded Investment [Line Items]
Total loans	156,871	152,386
One-to Four- Family [Member] | Pass [Member]
Financing Receivable, Recorded Investment [Line Items]
Total loans	151,786	148,617
One-to Four- Family [Member] | Watch [Member]
Financing Receivable, Recorded Investment [Line Items]
Total loans	246	998
One-to Four- Family [Member] | Special Mention [Member]
Financing Receivable, Recorded Investment [Line Items]
Total loans	138	139
One-to Four- Family [Member] | Substandard [Member]
Financing Receivable, Recorded Investment [Line Items]
Total loans	4,701	2,632
One-to Four- Family [Member] | Doubtful [Member]
Financing Receivable, Recorded Investment [Line Items]
Total loans	0	0
One-to Four- Family [Member] | Loss [Member]
Financing Receivable, Recorded Investment [Line Items]
Total loans	0	0
Home Equity [Member]
Financing Receivable, Recorded Investment [Line Items]
Total loans	29,129	27,771
Home Equity [Member] | Pass [Member]
Financing Receivable, Recorded Investment [Line Items]
Total loans	28,321	26,547
Home Equity [Member] | Watch [Member]
Financing Receivable, Recorded Investment [Line Items]
Total loans	0	536
Home Equity [Member] | Special Mention [Member]
Financing Receivable, Recorded Investment [Line Items]
Total loans	0	0
Home Equity [Member] | Substandard [Member]
Financing Receivable, Recorded Investment [Line Items]
Total loans	808	688
Home Equity [Member] | Doubtful [Member]
Financing Receivable, Recorded Investment [Line Items]
Total loans	0	0
Home Equity [Member] | Loss [Member]
Financing Receivable, Recorded Investment [Line Items]
Total loans	0	0
Commercial and Multifamily [Member]
Financing Receivable, Recorded Investment [Line Items]
Total loans	201,411	181,004
Commercial and Multifamily [Member] | Pass [Member]
Financing Receivable, Recorded Investment [Line Items]
Total loans	192,817	171,678
Commercial and Multifamily [Member] | Watch [Member]
Financing Receivable, Recorded Investment [Line Items]
Total loans	6,876	8,105
Commercial and Multifamily [Member] | Special Mention [Member]
Financing Receivable, Recorded Investment [Line Items]
Total loans	360	0
Commercial and Multifamily [Member] | Substandard [Member]
Financing Receivable, Recorded Investment [Line Items]
Total loans	1,358	1,221
Commercial and Multifamily [Member] | Doubtful [Member]
Financing Receivable, Recorded Investment [Line Items]
Total loans	0	0
Commercial and Multifamily [Member] | Loss [Member]
Financing Receivable, Recorded Investment [Line Items]
Total loans	0	0
Construction and Land [Member]
Financing Receivable, Recorded Investment [Line Items]
Total loans	54,921	70,915
Construction and Land [Member] | Pass [Member]
Financing Receivable, Recorded Investment [Line Items]
Total loans	54,872	67,539
Construction and Land [Member] | Watch [Member]
Financing Receivable, Recorded Investment [Line Items]
Total loans	0	3,376
Construction and Land [Member] | Special Mention [Member]
Financing Receivable, Recorded Investment [Line Items]
Total loans	0	0
Construction and Land [Member] | Substandard [Member]
Financing Receivable, Recorded Investment [Line Items]
Total loans	49	0
Construction and Land [Member] | Doubtful [Member]
Financing Receivable, Recorded Investment [Line Items]
Total loans	0	0
Construction and Land [Member] | Loss [Member]
Financing Receivable, Recorded Investment [Line Items]
Total loans	0	0
Manufactured Homes [Member]
Financing Receivable, Recorded Investment [Line Items]
Total loans	16,864	15,494
Manufactured Homes [Member] | Pass [Member]
Financing Receivable, Recorded Investment [Line Items]
Total loans	16,711	15,288
Manufactured Homes [Member] | Watch [Member]
Financing Receivable, Recorded Investment [Line Items]
Total loans	0	78
Manufactured Homes [Member] | Special Mention [Member]
Financing Receivable, Recorded Investment [Line Items]
Total loans	0	30
Manufactured Homes [Member] | Substandard [Member]
Financing Receivable, Recorded Investment [Line Items]
Total loans	153	98
Manufactured Homes [Member] | Doubtful [Member]
Financing Receivable, Recorded Investment [Line Items]
Total loans	0	0
Manufactured Homes [Member] | Loss [Member]
Financing Receivable, Recorded Investment [Line Items]
Total loans	0	0
Floating Homes [Member]
Financing Receivable, Recorded Investment [Line Items]
Total loans	26,699	23,996
Floating Homes [Member] | Pass [Member]
Financing Receivable, Recorded Investment [Line Items]
Total loans	26,699	23,996
Floating Homes [Member] | Watch [Member]
Financing Receivable, Recorded Investment [Line Items]
Total loans	0	0
Floating Homes [Member] | Special Mention [Member]
Financing Receivable, Recorded Investment [Line Items]
Total loans	0	0
Floating Homes [Member] | Substandard [Member]
Financing Receivable, Recorded Investment [Line Items]
Total loans	0	0
Floating Homes [Member] | Doubtful [Member]
Financing Receivable, Recorded Investment [Line Items]
Total loans	0	0
Floating Homes [Member] | Loss [Member]
Financing Receivable, Recorded Investment [Line Items]
Total loans	0	0
Other Consumer [Member]
Financing Receivable, Recorded Investment [Line Items]
Total loans	5,032	3,932
Other Consumer [Member] | Pass [Member]
Financing Receivable, Recorded Investment [Line Items]
Total loans	4,975	3,821
Other Consumer [Member] | Watch [Member]
Financing Receivable, Recorded Investment [Line Items]
Total loans	0	49
Other Consumer [Member] | Special Mention [Member]
Financing Receivable, Recorded Investment [Line Items]
Total loans	0	0
Other Consumer [Member] | Substandard [Member]
Financing Receivable, Recorded Investment [Line Items]
Total loans	57	62
Other Consumer [Member] | Doubtful [Member]
Financing Receivable, Recorded Investment [Line Items]
Total loans	0	0
Other Consumer [Member] | Loss [Member]
Financing Receivable, Recorded Investment [Line Items]
Total loans	0	0
Commercial Business [Member]
Financing Receivable, Recorded Investment [Line Items]
Total loans	39,158	26,331
Commercial Business [Member] | Pass [Member]
Financing Receivable, Recorded Investment [Line Items]
Total loans	38,396	25,625
Commercial Business [Member] | Watch [Member]
Financing Receivable, Recorded Investment [Line Items]
Total loans	494	326
Commercial Business [Member] | Special Mention [Member]
Financing Receivable, Recorded Investment [Line Items]
Total loans	134	0
Commercial Business [Member] | Substandard [Member]
Financing Receivable, Recorded Investment [Line Items]
Total loans	134	380
Commercial Business [Member] | Doubtful [Member]
Financing Receivable, Recorded Investment [Line Items]
Total loans	0	0
Commercial Business [Member] | Loss [Member]
Financing Receivable, Recorded Investment [Line Items]
Total loans	$ 0	$ 0

Loans, Nonaccrual and Past Due

Loans, Nonaccrual and Past Due Loans (Details) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2017	Dec. 31, 2016
Financing Receivable, Recorded Investment, Past Due [Line Items]
Nonaccrual loans	$ 2,100	$ 3,144
90 Days and Greater Past Due and Still Accruing	0	0
Past Due	4,564	6,405
Current	525,521	495,424
Total loans	$ 530,085	501,829
Maximum [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Period past due for loans to be automatically placed on nonaccrual	90 days
30-59 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past Due	$ 1,140	3,872
60-89 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past Due	1,956	190
90 Days and Greater Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past Due	1,468	2,343
One-to Four- Family [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Nonaccrual loans	878	2,169
90 Days and Greater Past Due and Still Accruing	0	0
Past Due	2,492	4,424
Current	154,379	147,962
Total loans	156,871	152,386
One-to Four- Family [Member] | 30-59 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past Due	64	2,476
One-to Four- Family [Member] | 60-89 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past Due	1,723	161
One-to Four- Family [Member] | 90 Days and Greater Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past Due	705	1,787
Home Equity [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Nonaccrual loans	700	536
90 Days and Greater Past Due and Still Accruing	0	0
Past Due	981	954
Current	28,148	26,817
Total loans	29,129	27,771
Home Equity [Member] | 30-59 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past Due	346	460
Home Equity [Member] | 60-89 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past Due	28	0
Home Equity [Member] | 90 Days and Greater Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past Due	607	494
Commercial and Multifamily [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Nonaccrual loans	206	218
90 Days and Greater Past Due and Still Accruing	0	0
Past Due	206	0
Current	201,205	181,004
Total loans	201,411	181,004
Commercial and Multifamily [Member] | 30-59 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past Due	206	0
Commercial and Multifamily [Member] | 60-89 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past Due	0	0
Commercial and Multifamily [Member] | 90 Days and Greater Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past Due	0	0
Construction and Land [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Nonaccrual loans	49	0
90 Days and Greater Past Due and Still Accruing	0	0
Past Due	141	440
Current	54,780	70,475
Total loans	54,921	70,915
Construction and Land [Member] | 30-59 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past Due	43	440
Construction and Land [Member] | 60-89 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past Due	49	0
Construction and Land [Member] | 90 Days and Greater Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past Due	49	0
Manufactured Homes [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Nonaccrual loans	133	72
90 Days and Greater Past Due and Still Accruing	0	0
Past Due	233	411
Current	16,631	15,083
Total loans	16,864	15,494
Manufactured Homes [Member] | 30-59 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past Due	23	321
Manufactured Homes [Member] | 60-89 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past Due	103	28
Manufactured Homes [Member] | 90 Days and Greater Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past Due	107	62
Floating Homes [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
90 Days and Greater Past Due and Still Accruing	0	0
Past Due	0	0
Current	26,699	23,996
Total loans	26,699	23,996
Floating Homes [Member] | 30-59 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past Due	0	0
Floating Homes [Member] | 60-89 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past Due	0	0
Floating Homes [Member] | 90 Days and Greater Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past Due	0	0
Other Consumer [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
90 Days and Greater Past Due and Still Accruing	0	0
Past Due	55	27
Current	4,977	3,905
Total loans	5,032	3,932
Other Consumer [Member] | 30-59 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past Due	49	26
Other Consumer [Member] | 60-89 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past Due	6	1
Other Consumer [Member] | 90 Days and Greater Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past Due	0	0
Commercial Business [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Nonaccrual loans	134	149
90 Days and Greater Past Due and Still Accruing	0	0
Past Due	456	149
Current	38,702	26,182
Total loans	39,158	26,331
Commercial Business [Member] | 30-59 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past Due	409	149
Commercial Business [Member] | 60-89 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past Due	47	0
Commercial Business [Member] | 90 Days and Greater Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past Due	$ 0	$ 0

Loans, Credit Risk Profile Base

Loans, Credit Risk Profile Based on Payment Activity (Details) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2017	Dec. 31, 2016
Credit Risk Profile by Type of Loan [Abstract]
Total loans	$ 530,085	$ 501,829
Minimum [Member]
Financing Receivable, Recorded Investment [Line Items]
Period past due for loans still accruing interest to be considered nonperforming	90 days
Period past due for TDRs loans to be considered nonperforming	30 days
Performing [Member]
Credit Risk Profile by Type of Loan [Abstract]
Total loans	$ 526,582	498,480
Nonperforming [Member]
Credit Risk Profile by Type of Loan [Abstract]
Total loans	3,503	3,349
One-to Four- Family [Member]
Credit Risk Profile by Type of Loan [Abstract]
Total loans	156,871	152,386
One-to Four- Family [Member] | Performing [Member]
Credit Risk Profile by Type of Loan [Abstract]
Total loans	154,679	150,170
One-to Four- Family [Member] | Nonperforming [Member]
Credit Risk Profile by Type of Loan [Abstract]
Total loans	2,192	2,216
Home Equity [Member]
Credit Risk Profile by Type of Loan [Abstract]
Total loans	29,129	27,771
Home Equity [Member] | Performing [Member]
Credit Risk Profile by Type of Loan [Abstract]
Total loans	28,429	27,218
Home Equity [Member] | Nonperforming [Member]
Credit Risk Profile by Type of Loan [Abstract]
Total loans	700	553
Commercial and Multifamily [Member]
Credit Risk Profile by Type of Loan [Abstract]
Total loans	201,411	181,004
Commercial and Multifamily [Member] | Performing [Member]
Credit Risk Profile by Type of Loan [Abstract]
Total loans	201,205	180,786
Commercial and Multifamily [Member] | Nonperforming [Member]
Credit Risk Profile by Type of Loan [Abstract]
Total loans	206	218
Construction and Land [Member]
Credit Risk Profile by Type of Loan [Abstract]
Total loans	54,921	70,915
Construction and Land [Member] | Performing [Member]
Credit Risk Profile by Type of Loan [Abstract]
Total loans	54,872	70,915
Construction and Land [Member] | Nonperforming [Member]
Credit Risk Profile by Type of Loan [Abstract]
Total loans	49	0
Manufactured Homes [Member]
Credit Risk Profile by Type of Loan [Abstract]
Total loans	16,864	15,494
Manufactured Homes [Member] | Performing [Member]
Credit Risk Profile by Type of Loan [Abstract]
Total loans	16,731	15,374
Manufactured Homes [Member] | Nonperforming [Member]
Credit Risk Profile by Type of Loan [Abstract]
Total loans	133	120
Floating Homes [Member]
Credit Risk Profile by Type of Loan [Abstract]
Total loans	26,699	23,996
Floating Homes [Member] | Performing [Member]
Credit Risk Profile by Type of Loan [Abstract]
Total loans	26,699	23,996
Floating Homes [Member] | Nonperforming [Member]
Credit Risk Profile by Type of Loan [Abstract]
Total loans	0	0
Other Consumer [Member]
Credit Risk Profile by Type of Loan [Abstract]
Total loans	5,032	3,932
Other Consumer [Member] | Performing [Member]
Credit Risk Profile by Type of Loan [Abstract]
Total loans	5,032	3,932
Other Consumer [Member] | Nonperforming [Member]
Credit Risk Profile by Type of Loan [Abstract]
Total loans	0	0
Commercial Business [Member]
Credit Risk Profile by Type of Loan [Abstract]
Total loans	39,158	26,331
Commercial Business [Member] | Performing [Member]
Credit Risk Profile by Type of Loan [Abstract]
Total loans	38,935	26,089
Commercial Business [Member] | Nonperforming [Member]
Credit Risk Profile by Type of Loan [Abstract]
Total loans	$ 223	$ 242

Loans, Loans Individually Evalu

Loans, Loans Individually Evaluated for Impairment (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016	Dec. 31, 2016
Financing Receivable, Impaired [Line Items]
Unpaid principal balance	$ 10,691		$ 10,691		$ 8,592
Recorded investment, without allowance	5,798		5,798		4,355
Recorded investment, with allowance	4,412		4,412		3,881
Total recorded investment	10,210		10,210		8,236
Related allowance	980		980		863
Average recorded investment	10,169	$ 11,911	9,240	$ 11,338
Interest income recognized	165	97	411	435
Impaired loans, interest income forgone			12	95
Commitments to lend additional funds to borrowers whose loans were classified as nonaccrual, TDR or impaired	0		0		0
One-to Four- Family [Member]
Financing Receivable, Impaired [Line Items]
Unpaid principal balance	6,971		6,971		5,010
Recorded investment, without allowance	3,403		3,403		2,454
Recorded investment, with allowance	3,261		3,261		2,295
Total recorded investment	6,664		6,664		4,749
Related allowance	377		377		536
Average recorded investment	6,603	5,445	5,718	5,533
Interest income recognized	117	58	269	197
Home Equity [Member]
Financing Receivable, Impaired [Line Items]
Unpaid principal balance	1,125		1,125		913
Recorded investment, without allowance	487		487		446
Recorded investment, with allowance	520		520		386
Total recorded investment	1,007		1,007		832
Related allowance	168		168		121
Average recorded investment	1,008	968	921	944
Interest income recognized	10	4	30	31
Commercial and Multifamily [Member]
Financing Receivable, Impaired [Line Items]
Unpaid principal balance	1,737		1,737		1,582
Recorded investment, without allowance	1,717		1,717		1,221
Recorded investment, with allowance	0		0		361
Total recorded investment	1,717		1,717		1,582
Related allowance	0		0		24
Average recorded investment	1,732	4,365	1,652	3,902
Interest income recognized	24	19	72	152
Construction and Land [Member]
Financing Receivable, Impaired [Line Items]
Unpaid principal balance	99		99		83
Recorded investment, without allowance	58		58		0
Recorded investment, with allowance	41		41		83
Total recorded investment	99		99		83
Related allowance	32		32		35
Average recorded investment	114	86	91	88
Interest income recognized	(1)	1	2	3
Manufactured Homes [Member]
Financing Receivable, Impaired [Line Items]
Unpaid principal balance	331		331		326
Recorded investment, without allowance	133		133		91
Recorded investment, with allowance	176		176		221
Total recorded investment	309		309		312
Related allowance	70		70		59
Average recorded investment	306	383	311	377
Interest income recognized	9	6	19	23
Other Consumer [Member]
Financing Receivable, Impaired [Line Items]
Unpaid principal balance	57		57		62
Recorded investment, without allowance	0		0		0
Recorded investment, with allowance	57		57		62
Total recorded investment	57		57		62
Related allowance	57		57		65
Average recorded investment	58	24	60	20
Interest income recognized	1	0	3	2
Commercial Business [Member]
Financing Receivable, Impaired [Line Items]
Unpaid principal balance	371		371		616
Recorded investment, without allowance	0		0		143
Recorded investment, with allowance	357		357		473
Total recorded investment	357		357		616
Related allowance	276		276		$ 23
Average recorded investment	348	640	487	474
Interest income recognized	$ 5	$ 9	$ 16	$ 27

Loans, Troubled Debt Restructur

Loans, Troubled Debt Restructurings (Details) $ in Thousands	9 Months Ended
	Sep. 30, 2017USD ($)Loan	Sep. 30, 2016Loan	Dec. 31, 2016USD ($)
Financing Receivable, Modifications [Line Items]
Loans classified as TDRs	$ 4,000		$ 3,400
Number of contracts | Loan		0
Loans modified as TDRs within the previous 12 months | Loan	0	0
Commitments to extend additional credit to borrowers whose loan terms have been modified in TDRs	$ 0		$ 0
One-to Four- Family [Member]
Financing Receivable, Modifications [Line Items]
Number of contracts | Loan	1
Total modifications	$ 1,300
Troubled debt restructuring loans paid off	125
Manufactured Homes [Member]
Financing Receivable, Modifications [Line Items]
Troubled debt restructuring loans paid off	$ 14
Home Equity [Member]
Financing Receivable, Modifications [Line Items]
Number of contracts | Loan	1
Troubled debt restructuring loans paid off	$ 86
Land [Member]
Financing Receivable, Modifications [Line Items]
Troubled debt restructuring loans paid off	27
Commercial and Multifamily [Member]
Financing Receivable, Modifications [Line Items]
Troubled debt restructuring loans paid off	$ 359

Fair Value Measurements, Fair V

Fair Value Measurements, Fair Value Hierarchy (Details) - USD ($) $ in Thousands	Sep. 30, 2017	Dec. 31, 2016
FINANCIAL ASSETS [Abstract]
Available-for-sale securities	$ 5,688	$ 6,604
Mortgage servicing rights	3,370	3,561
Carrying Value [Member]
FINANCIAL ASSETS [Abstract]
Cash and cash equivalents	60,651	54,582
Available-for-sale securities	5,688	6,604
Loans held-for-sale	296	871
Loans receivable, net	523,217	495,179
Accrued interest receivable	1,943	1,816
Mortgage servicing rights	3,370	3,561
FHLB Stock	1,825	2,840
FINANCIAL LIABILITIES [Abstract]
Non-maturity deposits	361,201	307,989
Time deposits	163,616	159,742
Borrowings	28,000	54,792
Accrued interest payable	68	73
Estimated Fair Value [Member]
FINANCIAL ASSETS [Abstract]
Cash and cash equivalents	60,651	54,582
Available-for-sale securities	5,688	6,604
Loans held-for-sale	296	871
Loans receivable, net	522,167	494,289
Accrued interest receivable	1,943	1,816
Mortgage servicing rights	3,370	3,561
FHLB Stock	1,825	2,840
FINANCIAL LIABILITIES [Abstract]
Non-maturity deposits	361,201	307,989
Time deposits	161,434	159,333
Borrowings	28,000	54,805
Accrued interest payable	68	73
Estimated Fair Value [Member] | Level 1 [Member]
FINANCIAL ASSETS [Abstract]
Cash and cash equivalents	60,651	54,582
Available-for-sale securities	0	0
Loans held-for-sale	0	0
Loans receivable, net	0	0
Accrued interest receivable	1,943	1,816
Mortgage servicing rights	0	0
FHLB Stock	0	0
FINANCIAL LIABILITIES [Abstract]
Non-maturity deposits	0	0
Time deposits	0	0
Borrowings	0	0
Accrued interest payable	0	0
Estimated Fair Value [Member] | Level 2 [Member]
FINANCIAL ASSETS [Abstract]
Cash and cash equivalents	0	0
Available-for-sale securities	5,688	6,257
Loans held-for-sale	296	871
Loans receivable, net	0	0
Accrued interest receivable	0	0
Mortgage servicing rights	0	0
FHLB Stock	0	0
FINANCIAL LIABILITIES [Abstract]
Non-maturity deposits	361,201	307,989
Time deposits	161,434	159,333
Borrowings	28,000	54,805
Accrued interest payable	68	73
Estimated Fair Value [Member] | Level 3 [Member]
FINANCIAL ASSETS [Abstract]
Cash and cash equivalents	0	0
Available-for-sale securities	0	347
Loans held-for-sale	0	0
Loans receivable, net	522,167	494,289
Accrued interest receivable	0	0
Mortgage servicing rights	3,370	3,561
FHLB Stock	1,825	2,840
FINANCIAL LIABILITIES [Abstract]
Non-maturity deposits	0	0
Time deposits	0	0
Borrowings	0	0
Accrued interest payable	$ 0	$ 0

Fair Value Measurements, Recurr

Fair Value Measurements, Recurring and Nonrecurring (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016	Dec. 31, 2016
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Asset transfers from Level 1 to Level 2	$ 0	$ 0	$ 0	$ 0
Asset transfers from Level 2 into Level 3	0	$ 0	0	$ 0
Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Municipal bonds	3,417		3,417		$ 3,353
Agency mortgage-backed securities	2,271		2,271		2,904
Non-agency mortgage-backed securities					347
Mortgage servicing rights	3,370		3,370		3,561
Liabilities carried at fair value	0		0		0
Recurring [Member] | Level 1 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Municipal bonds	0		0		0
Agency mortgage-backed securities	0		0		0
Non-agency mortgage-backed securities					0
Mortgage servicing rights	0		0		0
Recurring [Member] | Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Municipal bonds	3,417		3,417		3,353
Agency mortgage-backed securities	2,271		2,271		2,904
Non-agency mortgage-backed securities					0
Mortgage servicing rights	0		0		0
Recurring [Member] | Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Municipal bonds	0		0		0
Agency mortgage-backed securities	0		0		0
Non-agency mortgage-backed securities					347
Mortgage servicing rights	3,370		3,370		3,561
Nonrecurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
OREO and repossessed assets	1,032		1,032		1,172
Impaired loans	10,210		10,210		8,236
Liabilities carried at fair value	0		0		0
Nonrecurring [Member] | Level 1 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
OREO and repossessed assets	0		0		0
Impaired loans	0		0		0
Nonrecurring [Member] | Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
OREO and repossessed assets	0		0		0
Impaired loans	0		0		0
Nonrecurring [Member] | Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
OREO and repossessed assets	1,032		1,032		1,172
Impaired loans	$ 10,210		$ 10,210		$ 8,236

Fair Value Measurements, Quanti

Fair Value Measurements, Quantitative Information (Details)	9 Months Ended	12 Months Ended
	Sep. 30, 2017	Dec. 31, 2016
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Prepayment speed assumption	164.00%	152.00%
Recurring [Member] | Level 3 [Member] | Mortgage Servicing Rights [Member] | Discounted Cash Flow [Member] | Minimum [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Prepayment speed assumption	109.00%	104.00%
Discount rate	13.00%	13.00%
Recurring [Member] | Level 3 [Member] | Mortgage Servicing Rights [Member] | Discounted Cash Flow [Member] | Maximum [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Prepayment speed assumption	412.00%	396.00%
Discount rate	15.00%	15.00%
Recurring [Member] | Level 3 [Member] | Mortgage Servicing Rights [Member] | Discounted Cash Flow [Member] | Weighted Average [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Prepayment speed assumption	164.00%	152.00%
Discount rate	13.00%	13.00%
Recurring [Member] | Level 3 [Member] | Non-agency Mortgage-backed Securities [Member] | Discounted Cash Flow [Member] | Minimum [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Discount rate		7.00%
Recurring [Member] | Level 3 [Member] | Non-agency Mortgage-backed Securities [Member] | Discounted Cash Flow [Member] | Maximum [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Discount rate		9.00%
Recurring [Member] | Level 3 [Member] | Non-agency Mortgage-backed Securities [Member] | Discounted Cash Flow [Member] | Weighted Average [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Discount rate		8.00%
Nonrecurring [Member] | Level 3 [Member] | OREO [Member] | Market Approach [Member] | Minimum [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Adjustment for differences between comparable sales	0.00%	0.00%
Nonrecurring [Member] | Level 3 [Member] | OREO [Member] | Market Approach [Member] | Maximum [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Adjustment for differences between comparable sales	0.00%	0.00%
Nonrecurring [Member] | Level 3 [Member] | OREO [Member] | Market Approach [Member] | Weighted Average [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Adjustment for differences between comparable sales	0.00%	0.00%
Nonrecurring [Member] | Level 3 [Member] | Impaired Loans [Member] | Market Approach [Member] | Minimum [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Adjustment for differences between comparable sales	0.00%	0.00%
Nonrecurring [Member] | Level 3 [Member] | Impaired Loans [Member] | Market Approach [Member] | Maximum [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Adjustment for differences between comparable sales	100.00%	100.00%
Nonrecurring [Member] | Level 3 [Member] | Impaired Loans [Member] | Market Approach [Member] | Weighted Average [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Adjustment for differences between comparable sales	10.00%	11.00%

Fair Value Measurements, Level

Fair Value Measurements, Level 3 Unobservable Inputs (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Reconciliation of assets and liabilities measured at fair value using significant unobservable inputs (Level 3) [Roll Forward]
Beginning balance, at fair value	$ 318	$ 379	$ 347	$ 428
OTTI impairment losses	0	0	0	0
Sales, redemptions and principal payments	(318)	(29)	(347)	(90)
Change in unrealized loss	0	5	0	17
Ending balance, at fair value	$ 0	$ 355	$ 0	$ 355

Mortgage Servicing Rights (Deta

Mortgage Servicing Rights (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended		12 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016	Dec. 31, 2016
Mortgage Servicing Right, Key Economic Assumptions [Abstract]
Prepayment speed (Public Securities Association "PSA" model)			164.00%		152.00%
Weighted-average life			7 years		7 years 2 months 12 days
Yield to maturity discount rate			13.00%		13.00%
Contractually specified servicing, late and ancillary fees earned and recorded in mortgage servicing income, net of fair value market adjustments to the mortgage servicing rights	$ 18	$ 239	$ 399	$ 462
Gross amount of contractually specified servicing, late and ancillary fees earned and recorded in mortgage servicing income	230	$ 223	868	$ 636
Federal National Mortgage Association ("Fannie Mae") [Member]
Servicing Assets at Fair Value [Line Items]
Loans serviced for others	391,500		391,500		$ 410,100
Other Financial Institutions [Member]
Servicing Assets at Fair Value [Line Items]
Loans serviced for others	$ 19,400		$ 19,400		$ 13,800

Borrowings and FHLB Stock (Deta

Borrowings and FHLB Stock (Details) - USD ($)	9 Months Ended
	Sep. 30, 2017	Dec. 31, 2016
Short-term Debt [Line Items]
Investment in FHLB stock	$ 1,825,000	$ 2,840,000
Federal Home Loan Bank of Des Moines [Member]
Short-term Debt [Line Items]
Amount available to borrow under loan agreement	205,600,000	197,900,000
Outstanding borrowings	28,000,000	54,800,000
Net remaining amount available	161,600,000	122,200,000
One-to Four- Family [Member] | Federal Home Loan Bank of Des Moines [Member]
Short-term Debt [Line Items]
Loans used as collateral for credit facility	104,300,000	107,200,000
Commercial and Multifamily [Member] | Federal Home Loan Bank of Des Moines [Member]
Short-term Debt [Line Items]
Loans used as collateral for credit facility	108,800,000	94,400,000
Home Equity [Member] | Federal Home Loan Bank of Des Moines [Member]
Short-term Debt [Line Items]
Loans used as collateral for credit facility	15,700,000	15,900,000
Line of Credit [Member] | Pacific Coast Banker's Bank [Member]
Short-term Debt [Line Items]
Amount available to borrow under loan agreement	2,000,000
Outstanding borrowings	$ 0	0
Term period	1 year
Maturity date	Jun. 30, 2018
Line of Credit [Member] | Zions Bank [Member]
Short-term Debt [Line Items]
Outstanding borrowings	$ 0	0
Line of credit facility, maximum borrowing capacity	9,000,000
Line of credit facility, minimum cash balance required	250,000
Line of Credit [Member] | The Independent Bank [Member]
Short-term Debt [Line Items]
Amount available to borrow under loan agreement	10,000,000
Outstanding borrowings	$ 0	0
Maturity date	Nov. 1, 2017
Letter of Credit [Member] | Federal Home Loan Bank of Des Moines [Member]
Short-term Debt [Line Items]
Letters of credit to secure public deposits	$ 16,000,000	21,000,000
Federal Reserve Bank Advances [Member]
Short-term Debt [Line Items]
Outstanding borrowings	0	0
Unused borrowing capacity	$ 34,800,000	$ 42,000,000

Earnings Per Common Share (Deta

Earnings Per Common Share (Details) - USD ($) $ / shares in Units, $ in Thousands		3 Months Ended		9 Months Ended
		Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Earnings Per Common Share [Abstract]
Net income		$ 1,222	$ 1,454	$ 3,939	$ 3,814
Weighted-average number of shares outstanding, basic (in shares)		2,506,863	2,490,089	2,502,399	2,483,004
Effect of potentially dilutive common shares (in shares)	[1]	55,000	78,000	61,000	74,000
Weighted-average number of shares outstanding, diluted (in shares)		2,562,373	2,568,457	2,562,606	2,556,949
Earnings per share, basic (in dollars per share)		$ 0.49	$ 0.58	$ 1.57	$ 1.54
Earnings per share, diluted (in dollars per share)		$ 0.48	$ 0.57	$ 1.54	$ 1.48
Anti-dilutive securities not included in computation of diluted earnings per common share (in shares)		0	0	0	0
[1]	Represents the effect of the assumed exercise of stock options and vesting of non-participating restricted shares, based on the treasury stock method.

Stock-based Compensation (Detai

Stock-based Compensation (Details) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2017USD ($)shares	Sep. 30, 2016USD ($)	Sep. 30, 2017USD ($)Planshares	Sep. 30, 2016USD ($)
Stock-based Compensation [Line Items]
Number of equity incentive plans | Plan			2
Share-based compensation expense | $	$ 144	$ 126	$ 432	$ 354
Stock Options [Member]
Stock-based Compensation [Line Items]
Cumulative number of shares issued (in shares)	265,801		265,801
Restricted Stock [Member]
Stock-based Compensation [Line Items]
Cumulative number of shares issued (in shares)	107,214		107,214
2008 Plan [Member] | Stock Options and Stock Appreciation Rights [Member]
Stock-based Compensation [Line Items]
Shares authorized (in shares)	126,287		126,287
2008 Plan [Member] | Restricted Stock and Restricted Stock Units [Member]
Stock-based Compensation [Line Items]
Shares authorized (in shares)	50,514		50,514
2013 Plan [Member] | Stock Options and Stock Appreciation Rights [Member]
Stock-based Compensation [Line Items]
Shares authorized (in shares)	141,750		141,750
2013 Plan [Member] | Restricted Stock and Restricted Stock Units [Member]
Stock-based Compensation [Line Items]
Shares authorized (in shares)	56,700		56,700

Stock-based Compensation, Stock

Stock-based Compensation, Stock Option Awards (Details) - Stock Options [Member] - USD ($)	9 Months Ended		12 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Dec. 31, 2016
Stock-based Compensation [Line Items]
Term of awards	10 years
Options, Outstanding [Roll Forward]
Outstanding, beginning of period (in shares)	170,057
Granted (in shares)	32,010
Exercised (in shares)	(14,018)
Forfeited (in shares)	(604)
Expired (in shares)	0
Outstanding, end of period (in dollars per share)	187,445		170,057
Exercisable (in shares)	119,885
Expected to vest, assuming a 0% forfeiture rate over the vesting term (in shares)	67,560
Options, Outstanding, Weighted Average Exercise Price [Roll Forward]
Outstanding, beginning of period (in dollars per share)	$ 15.41
Granted (in dollars per share)	28.34
Exercised (in dollars per share)	9.88
Forfeited (in dollars per share)	28.21
Expired (in dollars per share)	0
Outstanding, end of period (in dollars per share)	17.99		$ 15.41
Exercisable (in dollars per share)	16.27
Expected to vest, assuming a 0% forfeiture rate over the vesting term (in dollars per share)	$ 21.05
Options, Additional Disclosures [Abstract]
Outstanding, weighted-average remaining contractual term	6 years 5 months 23 days		6 years 5 months 8 days
Exercisable, weighted-average remaining contractual term	5 years 10 months 13 days
Expected to vest, assuming a 0% forfeiture rate over the vesting term, weighted-average remaining contractual term	7 years 6 months 22 days
Outstanding, aggregate intrinsic value	$ 3,000,547		$ 2,141,018
Exercisable, aggregate intrinsic value	2,125,564
Expected to vest, assuming a 0% forfeiture rate over the vesting term, aggregate intrinsic value	$ 874,983
Forfeiture rate	0.00%
Unrecognized compensation cost	$ 331,000
Remaining weighted-average vesting period	1 year 7 months 6 days
Share-based compensation arrangement, fair value assumptions and methodology [Abstract]
Annual dividend yield	1.28%	1.03%
Expected volatility	22.99%	25.48%
Risk-free interest rate	2.20%	1.64%
Expected term	6 years 6 months	6 years 11 months 1 day
Weighted-average grant date fair value per option granted (in dollars per share)	$ 6.62	$ 5.78
2008 Plan [Member]
Stock-based Compensation [Line Items]
Annual vesting percentage	20.00%
Vesting commencement period from grant date	1 year
2013 Plan [Member] | Minimum [Member]
Stock-based Compensation [Line Items]
Award vesting period	2 years
2013 Plan [Member] | Maximum [Member]
Stock-based Compensation [Line Items]
Award vesting period	4 years

Stock-based Compensation, Restr

Stock-based Compensation, Restricted Stock Awards (Details) - Restricted Stock Awards [Member] $ / shares in Units, $ in Thousands	9 Months Ended
	Sep. 30, 2017USD ($)Installment$ / sharesshares	Sep. 30, 2016USD ($)
Nonvested Restricted Stock Awards [Roll Forward]
Non-vested, beginning of period (in shares) | shares	26,138
Granted (in shares) | shares	576
Vested (in shares) | shares	(14,929)
Forfeited (in shares) | shares	0
Expired (in shares) | shares	0
Non-vested, end of period (in shares) | shares	11,785
Expected to vest assuming a 0% forfeiture rate over the vesting term (in shares) | shares	11,785
Nonvested Restricted Stock Awards, Weighted Average Grant Date Fair Value [Roll Forward]
Non-vested, beginning of period (in dollars per share) | $ / shares	$ 18.08
Granted (in dollars per share) | $ / shares	28.34
Vested (in dollars per share) | $ / shares	17.61
Forfeited (in dollars per share) | $ / shares	0
Expired (in dollars per share) | $ / shares	0
Non-vested, end of period (in dollars per share) | $ / shares	19.05
Expected to vest assuming a 0% forfeiture rate over the vesting term, weighted average grant date fair value (in dollars per share) | $ / shares	$ 19.05
Nonvested Restricted Stock Awards, Additional Disclosures [Abstract]
Forfeiture rate	0.00%
Unrecognized compensation cost | $	$ 107
Remaining weighted-average vesting period	6 months 11 days
Total fair value of shares vested | $	$ 430	$ 272
2008 Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Annual vesting percentage	20.00%
Vesting commencement period from grant date	1 year
2013 Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting commencement period from grant date	1 year
Immediate vesting percentage	33.33%
Number of annual installments | Installment	2

Stock-based Compensation, Emplo

Stock-based Compensation, Employee Stock Ownership Plan (Details) - Employee Stock Ownership Plan [Member] - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016	Aug. 31, 2012	Jan. 31, 2008
Employee Stock Ownership Plan (ESOP) Disclosures [Line Items]
Repayment period			10 years
Committed to release (in shares)	21,443		21,443
Unallocated shares (in shares)	66,800		66,800
Number of common shares hold by the trust (in shares)	178,124		178,124
Fair value of shares held by ESOP trust	$ 6,100		$ 6,100
ESOP compensation expense	172	$ 155	510	$ 426
ESOP Borrowing in 2008 [Member]
Employee Stock Ownership Plan (ESOP) Disclosures [Line Items]
Amount borrowed by ESOP to purchase common stock						$ 1,200
ESOP loan interest rate						4.00%
ESOP remaining loan balance from shares purchased	136		136
ESOP Borrowing in 2012 [Member]
Employee Stock Ownership Plan (ESOP) Disclosures [Line Items]
Amount borrowed by ESOP to purchase common stock					$ 1,100
ESOP loan interest rate					2.25%
ESOP remaining loan balance from shares purchased	$ 590		$ 590

Subsequent Event (Details)

Subsequent Event (Details) - Subsequent Event [Member] - Quarterly Cash Dividend Declared [Member]	Oct. 26, 2017$ / shares
Subsequent Event [Line Items]
Dividends payable, date declared	Oct. 26, 2017
Dividends declared (in dollars per share)	$ 0.10
Dividends payable, date to be paid	Nov. 24, 2017
Dividends payable, date of record	Nov. 10, 2017